Fire Full Moon Paul Klee Buy Art Prints Now
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Tom Gurney BSc (Hons) is an art history expert with over 20 years experience
Published on June 19, 2020 / Updated on September 27, 2026
Email: tomgurney1@gmail.com / Phone: +44 7429 011000

Two lights in a field of blocks

A yellow disc hangs in the upper left of Paul Klee’s Fire at Full Moon. Across a field of dark, closely fitted blocks, a bright red shape opens like a cross or a flame. The title asks us to see moon and fire. Yet the scene refuses to settle into an ordinary night landscape: its ground is built from rectangles, stepped edges and angled planes, with no continuous horizon or clear distance between the two lights. The forms can feel architectural one moment and purely coloured the next.[1][2]

Klee made the picture in 1933. Museum Folkwang, which owns it, thinks it was probably painted that summer, after he had been suspended from his Düsseldorf teaching post. The museum raises a political interpretation but phrases it as a question. That care matters. The painting’s date and Klee’s circumstances are documented; an explanation of what every block or the red form meant to him is not.[1][3]

Explore the details of Fire at Full Moon

Select a numbered area to examine its detail at high resolution.

Numbered guide to 5 visual details in Fire at Full Moon 1 2 3 4 5
1

Yellow moon against the violet field

Detail 1: Yellow moon against the violet field in Fire at Full Moon
2

Red form and surrounding blocks

Detail 2: Red form and surrounding blocks in Fire at Full Moon
3

Dark crossing planes at the centre

Detail 3: Dark crossing planes at the centre in Fire at Full Moon
4

Lower grid of uneven colour blocks

Detail 4: Lower grid of uneven colour blocks in Fire at Full Moon
5

Klee's mark at the upper right

Detail 5: Klee's mark at the upper right in Fire at Full Moon

Contents

  1. Which painting is Fire at Full Moon?
  2. What do the moon and fire look like?
  3. Colour against a geometric field
  4. Does 1933 make this a political painting?
  5. How did the painting reach Essen?
  6. Looking again at the two lights

Which painting is Fire at Full Moon?

The original German title is Feuer bei Vollmond. The English Fire at Full Moon appears in the owning museum’s record and the Jewish Museum’s 2026 exhibition checklist. The latter supplies Klee’s annual number 1933, 353. Folkwang records the work under inventory G 284 and gives its size as 50 × 65 cm. An annual number identifies the work within Klee’s own production; the museum inventory number identifies the object in Essen.[1][2]

Folkwang’s medium wording is unusually useful: watercolour over paste colour on prepared canvas. “Mixed media on canvas,” the Jewish Museum’s shorter caption, is not wrong as a broad description but gives less information about the layers Folkwang reports. The result should not be called simply “oil on canvas” on the strength of a commercial image caption. A German postcard listing describes further layers involving an egg coating and oil ground; another reproduction seller mentions wax. Those details have not been checked against a Folkwang conservation report, so they remain technical leads rather than facts about the construction of this object.[1][2][4]

Folkwang’s 50 × 65 cm dimension also differs from an art-print seller’s 44.1 × 57 cm. The two sets have roughly similar proportions, but no accessible document identifies which component the smaller figure measures. It might describe the painted field, another measured component or simply be an error. Rather than inventing a reconciliation, this page follows the owning museum’s current measurement and records the discrepancy for further research.[1][4]

The support matters to looking. Klee’s watercolour sits over another coloured layer on a prepared canvas, rather than being a transparent wash on a bare sheet. That helps explain why “watercolour” alone may conjure the wrong image of loose, pale paper painting. It does not let a viewer diagnose individual underlayers or the precise order of application from a small digital reproduction. Folkwang’s own technical file and the printed catalogue raisonné entry would be needed to say much more about the paint structure.[1]

What do the moon and fire look like?

The yellow disc is near the upper left, contained within a darker rectangular zone. Its circular boundary is sharp against the neighbouring blocks. The red form to the right is larger, irregular and roughly cross-shaped, its arms pressing into adjacent rectangles. The title calls the first a moon and asks the second to be seen as fire; the visible form of the latter is still hard to reduce to a single flame outline. Folkwang itself describes these two colour areas as the composition’s poles.[1][5]

Between the yellow and red, a broad passage of muted greys, browns and dark greenish colours forms no obvious path. Some edges meet cleanly; others change direction at a step or notch. Lower in the painting, a small warm triangle and several offset dark planes can suggest roofs, walls or passages, but a particular building has not been identified. What makes a “landscape” possible here is less a depicted terrain than the relation of the two bright elements to an interlocking field that seems to extend around and between them.[1][5]

The yellow disc and red form do not work identically. The disc is round, compact and detached from surrounding edges. The red is angular and seems fitted into, or cut across, the adjacent grid. Looking from one to the other changes the apparent role of the dark shapes: around the moon they can feel like a night sky broken into planes; around the red they can feel like enclosing architecture or a barrier through which light pushes. These are visual possibilities, not named objects documented by the artist.[1][5]

Folkwang notes that the graphic elements create local effects of perspective. One can test this especially at a stepped junction: a dark block may seem to overlap another, while a diagonal edge can make the next block recede. But these suggestions do not add up to a single viewpoint. A plane that seemed to advance near the top may flatten again as the eye follows its boundary. The work keeps an architectural suggestion without supplying the stable walls, roof and horizon of an illustrated house.[1][5]

This is why a general claim that the whole painting “moves” explains too little. Klee has made a field in which individual edges alter how neighbouring rectangles are read. The eye has to travel; the blocks themselves need not represent objects in motion. The muted colours are likewise not inherently comforting or frightening. Their practical role is to make the moon and red form striking and to keep the field from becoming a bright checkerboard.[1][5]

Colour against a geometric field

The image is organised through many adjacent colour areas, but it does not follow a single repeatable unit. Rectangles vary in width and height; several are interrupted by diagonals or steps. Near the red shape, a line of blocks appears to shift around it. Elsewhere the darker areas merge enough to make an individual boundary less obvious. Klee makes geometry serve an unstable pictorial field rather than a perfectly regular grid.[1][5]

In a 2017 Fondation Beyeler exhibition dossier, Feuer bei Vollmond appeared among Klee’s responses to geometric abstraction. The German and French versions of that dossier are two editions of one institutional account. Their context is useful, but it should not make every rectangle a borrowed De Stijl square or every colour a diagram from a Bauhaus lesson. The specific irregularities of this painting—the inserted disc, open red cross and unequal blocks—are the point of comparison. The dossier’s nearby examples, including Verspannte Flächen and Le rouge et le noir, show that geometric ordering was a continuing problem in Klee’s work, not a single formula mechanically repeated.[6]

Folkwang places the painting within a theory of pictorial forms Klee had developed since 1920, and stresses his concern with relations among meaning, form and the colour of a surface. This is a museum interpretation of the work’s formal setting. It gives a more concrete route into the image than saying that Klee “liked colour theory.” A yellow circle and red angular shape carry meaning because of their names and positions, but also because their brightness and outline have been set against quieter surrounding planes.[1]

Folkwang quotes a letter Klee sent to his wife Lily in September 1933. He described working at that time predominantly through colour, trying to keep light–dark contrasts small and experimenting with grey, red and blue ground tones. A German-language auction discussion of a different 1933 work cites the letter as dated 21 September and points to a 2003 exhibition catalogue transcription. The letter is close to the probable date of Fire at Full Moon and illuminates a current artistic concern; it does not name this painting or identify its red and yellow forms. The painting itself also makes vivid contrast visible, so the letter cannot be treated as a rule Klee perfectly fulfilled in every work.[1][7]

The comparison has a useful limit. Knowing that Klee was trying ground tones helps a viewer pay attention to the dark field as an active set of choices. It does not tell us exactly which grey or red passages were put down first, what pigment they contain, or whether the moon was conceived before the rest of the picture. Those are questions for technical evidence. Art-historical context is most useful here when it makes close looking more exact without pretending to replace a conservation examination.[1][7]

Does 1933 make this a political painting?

Klee’s year in Germany had changed sharply. He had left the Bauhaus for a professorship at Düsseldorf in 1931. A Zentrum Paul Klee archival guide dates his summary suspension after the Nazi takeover to 21 April 1933; formal dismissal and his return to Bern with Lily followed later that year. Folkwang’s probable summer date for this painting places its creation after the April suspension. It is reasonable to bring those events into the account of the work, provided their relationship to its imagery is stated carefully.[1][3]

Folkwang asks whether the title and image might refer to National Socialism and Klee’s removal from the academy, noting the many drawings he made that year with enigmatic titles. Its wording is deliberately interrogative. It does not identify the red shape as a particular party emblem, a burning book or a documented picture of a specific event. The title gives “fire,” but no location, cause or participants. A political reading can be historically alert without becoming a claim that the artist supplied an encrypted message whose key has been recovered.[1]

Other works from 1933 can make the difference clearer. Klee’s von der Liste gestrichen, Struck from the List, carries a title that directly evokes exclusion, and its own object history supports a more specific discussion of contemporary politics. Fire at Full Moon has a vivid title but less explicit reference. The two can be compared as works from the same threatened period without making their titles interchangeable or importing the face and marks of one into the other. The Jewish Museum’s 2026 Klee exhibition included both. Its checklist confirms the objects and their dates, while its wall-text document gives Fire at Full Moon a caption rather than a new object-specific proof of political intention.[2][8]

Later reception has also shaped what viewers expect. A French critic reviewing the 2016 Pompidou exhibition imagined an interior with a hearth and moonlight through an opening. That is a possible analogy for the combination of blocks and lights, not a documented setting. Similarly, a German press or retail claim that the work is generally a symbol of Klee’s persecution tells us something about later readings but does not replace his own records. The picture can sustain a political question and an architectural analogy because it leaves much of the represented space unresolved.[1][9]

It would be just as careless to call the work apolitical because it uses geometric colour fields. In 1933 Klee had concrete reasons to experience the national crisis, and Folkwang considers that context worth raising. The responsible conclusion is more precise: the year and suspension are facts; the probable summer date belongs to Folkwang’s assessment; a specific political meaning for moon and fire is an interpretation that remains open. The painting’s formal experiment and its historical moment can be discussed together without making either disappear.[1][3]

How did the painting reach Essen?

Folkwang publishes a relatively detailed provenance. The work remained in Klee’s studio from 1933 to 1940. After his death, it passed to Lily Klee in Bern, from 1940 until no later than 1946. Margrit and Hermann Rupf held it by 1946 and through 1957. The next stages involve Berggruen & Cie, or Heinz Berggruen and Daniel-Henry Kahnweiler, in Paris from 1957 until no later than June 1958, and Galerie Dr Werner Rusche in Cologne by June 1958. Museum Folkwang acquired it that month, supported by its named museum foundation and association. The record’s “by” and “no later than” terms are important: it does not date every handoff to an exact day.[1]

The museum reports that its 2019–20 provenance review judged this chain unbelastet, or unburdened by a problematic provenance in that review. It would overstate the record to turn that assessment into a claim that every dealer transaction and private transfer has been reconstructed in full. The public record does, however, make clear that the painting’s present Folkwang ownership is longstanding: it was purchased in 1958, rather than entering the museum through the much later exhibitions where it has appeared.[1]

Its appearance in the 2017 Fondation Beyeler exhibition and the 2026 Jewish Museum show records continuing institutional attention and loan circulation. These exhibitions also bring different interpretive frames: one groups Klee with geometric abstraction; the other situates his work in a broad account of possible worlds and the crises of his time. Neither exhibition changes what Folkwang’s object file states about the material painting, nor does a loan image by itself permit a new high-resolution reproduction on an ad-supported website.[2][6][8]

Folkwang’s own 2022 school programme used the work to explore how block-like pictorial areas can be read and even imagined in three dimensions. That educational use picks up something real about the picture: its coloured shapes suggest a space while resisting one stable construction. It should not be mistaken for a technical statement that Klee assembled physical puzzle pieces or made a model before painting.[10]

Looking again at the two lights

After following the blocks, return to the moon and red fire. The moon sits within a dark surround; the red shape meets several boundaries and seems to alter them. Each makes the other more conspicuous across the low-key field. The work is neither a simple naturalistic night view nor a colour chart. Its title offers two things to see, and its geometry prevents us from locating them confidently in one ordinary space.[1][5]

That resistance is part of the painting’s force. In 1933 Klee could set two luminous forms against an uneasy structure of colour while living through a sudden professional and political rupture. We can recognise the historical pressure, follow the museum’s political question, and still leave the picture open where the evidence does. The moon and fire remain vivid; their precise relationship is something the viewer must keep examining, not a message the sources have already settled.[1][3]

For related reading, see Struck from the List for a differently titled 1933 work, Klee’s late work for the years after his return to Bern, and the materials and techniques guide for the kinds of layered supports and media that his object records preserve.

Explore selected works from Klee’s much larger oeuvre. Titles without a link have an authenticated catalogue identity but no reviewed article yet.

Artworks directory

217 artworks

NameDateMedium
A Gate1939Painting and mixed media
A Woman for Gods1938Watercolour and mixed media
Ab Ovo1917Watercolour and mixed media
Above Mountain Summit1917Drawing and mixed media
Abstract Trio1923Drawing and mixed media
Acrobats1915Watercolour and mixed media
Actor's Mask1924Painting and mixed media
Ad Marginem1930Drawing and mixed media
Ad Parnassum1932Painting and mixed media
Adventurer Ship1927Drawing and mixed media
Affected Place1922Drawing and mixed media
After a Sketch from Zurich1914Watercolour and mixed media
After Drawing1919Print
After The Floods1936Watercolour and mixed media
All Souls' Picture1921Print
Ancient Harmony1925Painting and mixed media
Angel Applicant1939Drawing and mixed media
Angel Serves the Desired1920Print
Angel, Still Female1939Painting and mixed media
Angelus Novus1920Drawing and mixed media
Animal Terror1926Painting and mixed media
Arab Song1932Painting and mixed media
Archangel1938Painting and mixed media
Architecture1923Painting and mixed media
Architecture of the Plain1923Drawing and mixed media
Around the Fish1926Painting and mixed media
Arrival of the Air Steamer1921Drawing and mixed media
Asiatic God1924Painting and mixed media
Astrological Fantasy Portrait1924Drawing and mixed media
Athlete's Head1932Watercolour and mixed media
Aufgehender Stern1931Painting and mixed media
Autumn Flower1922Painting and mixed media
Bad Band1920Drawing and mixed media
Baroque Centaur1939Painting and mixed media
Before the Blitz1923Drawing and mixed media
Before the Snow1929Drawing and mixed media
Besessenes Madchen1924Watercolour and mixed media
Bird Garden1924Print
Bird Wandering Off1926Watercolour and mixed media
Blossoms in the Night1930Watercolour and mixed media
Blue-Bird-Pumpkin1939Painting and mixed media
Boats in the Flood1937Painting and mixed media
Botanical Theatre1934Drawing and mixed media
Boy in Fancy Dress1931Watercolour and mixed media
Broken Key1938Print
Brother and Sister1930Watercolour and mixed media
But the Red Roof1935Painting and mixed media
C - C = Fisch1931Watercolour and mixed media
Cacti1912Painting and mixed media
Camel (in Rhythmic Landscape with Trees)1920Drawing and mixed media
Captive Pierrot1923Drawing and mixed media
Castle and Sun1928Drawing and mixed media
Cat and Bird1928Drawing and mixed media
Cathedrals1925Watercolour and mixed media
Chalice of the Heart1937Painting and mixed media
Characters in Yellow1937Painting and mixed media
Chosen Site1927Mixed media
Christmas Picture1923Drawing and mixed media
City of Towers1916Painting and mixed media
Clarification1932Painting and mixed media
Collection of Figurines1926Painting and mixed media
Colorful Architecture1917Painting and mixed media
Comedians' Handbill1938Print
Comic Opera Singer1927Painting and mixed media
Composition1939Painting and mixed media
Composition with Figures1915Drawing and mixed media
Composition with the Yellow Half-Moon and the Y1918Watercolour and mixed media
Conch–Still Life II1939Watercolour and mixed media
Cosmic Composition1919Painting and mixed media
Crystal Gradation1921Drawing and mixed media
Dance of the Grieving Child1922Painting and mixed media
Dancing Girl1940Painting and mixed media
Das Licht und Etliches1931Mixed media
Death and Fire1940Painting and mixed media
Death for the Idea1915Print
Demon as Pirate1926Watercolour and mixed media
Diana1931Painting and mixed media
Diavolo Player1923Drawing and mixed media
Die Kapelle1917Watercolour and mixed media
Die Vase1938Painting and mixed media
Doctor1930Drawing and mixed media
Dredger and Sailboat1931Watercolour and mixed media
Ein Tor1939Painting and mixed media
Ein Weib fur Gotter1938Mixed media
Embrace1939Watercolour and mixed media
Episode before an Arab Town1923Print
Equals Infinity1932Painting and mixed media
Eros1923Drawing and mixed media
Error on Green1930Watercolour and mixed media
Evening Figure1935Drawing and mixed media
Falling Bird1919Print
Fermata1932Watercolour and mixed media
Fire Clown1921Watercolour and mixed media
Fire Full Moon1933Watercolour and mixed media
Fire in the Evening1929Painting and mixed media
Fish in the Harbour1916Watercolour and mixed media
Fish Magic1925Watercolour and mixed media
Flock of Birds1917Drawing and mixed media
Flora on Sand1927Watercolour and mixed media
Flower Myth1918Print
Flower Stand with Watering Can and Bucket1910Watercolour and mixed media
Flowering Tree (Abstraction with Reference to a Flowering Tree)1925Painting and mixed media
Flowers in Pots1923Print
Flowers in Stone1939Painting and mixed media
Forest Witch1938Painting and mixed media
Fright of a Girl1922Drawing and mixed media
Fruits on Red1930Drawing and mixed media
Full Moon1919Mixed media
Föhn Wind in Franz Marc's Garden1915Watercolour and mixed media
Garden in St Germain, The European Quarter near Tunis1914Watercolour and mixed media
Ghost Chamber with the Tall Door (New Version)1925Print
Ghost of a Genius1922Drawing and mixed media
Girl in Mourning1939Painting and mixed media
Glance of a Landscape1926Watercolour and mixed media
Gluht Nach1939Drawing and mixed media
Golden Fish1925Watercolour and mixed media
Goldfish Wife1921Watercolour and mixed media
Green Plant, Blood, Louse1924Drawing and mixed media
Hafenbild1918Mixed media
Hammamet with Mosque1914Watercolour and mixed media
Harbour with Sailing Ships1937Painting and mixed media
Hauptweg und Nebenwege1929Painting and mixed media
Heavenly and Earthly Time1927Drawing and mixed media
Heroic Fiddling1938Painting and mixed media
Heroic Roses1938Painting and mixed media
Heroic Strokes of the Bow—Mixed media
Highway and Byways1929Drawing and mixed media
Houses near the Gravel Pit1913Watercolour and mixed media
Howling Dog1928Painting and mixed media
In the Current Six Thresholds1929Painting and mixed media
In the Style of Kairouan1914Drawing and mixed media
Individualized Altimetry of Stripes1930Painting and mixed media
Insula Dulcamara1938Print
Interior with the Clock1913Watercolour and mixed media
Irma Rossa the Animal Tamer1918Drawing and mixed media
Journey in Corsica1927Drawing and mixed media
Landscape with Bluebirds1919Watercolour and mixed media
Legend of the Nile1937Painting and mixed media
Lemon Harvest1937Watercolour and mixed media
Likeness in the Bower1930Watercolour and mixed media
Limits of Reason1927Painting and mixed media
Little Hope1938Watercolour and mixed media
Magdalena before the Conversion1938Drawing and mixed media
Mask of Fear1932Painting and mixed media
May Picture1925Painting and mixed media
Monument in a Cemetery1922Watercolour and mixed media
Monuments at G1929Watercolour and mixed media
Municipal Jewel1917Watercolour and mixed media
Mural from the Temple of Longing Thither1922Print
Nach der Uberschwemmung1936Watercolour and mixed media
New Harmony1936Painting and mixed media
New House in the Suburbs—Mixed media
Old Steamboat1922Drawing and mixed media
On the Edge1930Drawing and mixed media
Once Emerged from the Gray of Night1918Drawing and mixed media
One Who Understands1934Painting and mixed media
Oriental Pleasure Garden1925Painting and mixed media
Park of Idols1939Watercolour and mixed media
Passing by Red Pillars1928Watercolour and mixed media
Persian Nightingales1917Drawing and mixed media
Popular Wall Painting1922Painting and mixed media
Prestidigitator1927Watercolour and mixed media
Rainy Day1931Watercolour and mixed media
Red and White Domes1914Watercolour and mixed media
Red Balloon1922Drawing and mixed media
Redgreen and Violet-Yellow Rhythms1920Drawing and mixed media
Refuge1930Watercolour and mixed media
Rhythmic Rythmical1930Painting and mixed media
Saint of the Inner Light1921Print
Scaffolding of a New Building1930Painting and mixed media
Scholar in Dealing with Stars1926Watercolour and mixed media
Seated Woman1930Drawing and mixed media
Senecio1922Painting and mixed media
Separation in the Evening1922Drawing and mixed media
Sinbad the Sailor1923Drawing and mixed media
Skeptically Smiling—Mixed media
Small House in the Garden City1928Watercolour and mixed media
Small Portrait of a Girl in Yellow1925Painting and mixed media
Southern Gardens1919Watercolour and mixed media
Static-Dynamic Gradation1923Drawing and mixed media
Still Life1927Painting and mixed media
Still Life with Gladioli1932Watercolour and mixed media
Strange Garden1923Drawing and mixed media
Stricken City1936Painting and mixed media
Strong Dream1929Watercolour and mixed media
Struck from the List1933Drawing and mixed media
Structural I1924Drawing and mixed media
Sumpflegende1919Painting and mixed media
Temple Gardens1920Drawing and mixed media
The Arrow before the Target1921Drawing and mixed media
The Barbed Noose with the Mice1923Watercolour and mixed media
The Flora of the Heath1925Watercolour and mixed media
The Goldfish1925Watercolour and mixed media
The Hour Before One Night1940Painting and mixed media
The Man in Love1923Print
The Mask with the Flag1925Mixed media
The Pathos of Fertility1921Print
The Rhine at Duisburg1937Painting and mixed media
The Way to the Citadel1937Painting and mixed media
Three Houses and a Bridge1922Watercolour and mixed media
Tightrope Walker1923Print
Tomb in Three Parts1923Watercolour and mixed media
Tomcat's Turf1919Watercolour and mixed media
Tower in Orange and Green1922Drawing and mixed media
Tree and Architecture - Rhythms I1920Watercolour and mixed media
Tree and Architecture - Rhythms II1920Painting and mixed media
Tropical Dawn with the Owl1921Mixed media
Tropische Dammerung1921Painting and mixed media
Twittering Machine1922Drawing and mixed media
Variations (Progressive Motif)1927Watercolour and mixed media
Ventriloquist and Crier in the Moor1923Print
Viaducts Break Ranks1937Drawing and mixed media
Villa R1919Painting and mixed media
Village Carnival1926Painting and mixed media
Vor dem Blitz1923Drawing and mixed media
Wald-Hexen1938Painting and mixed media
Young Forest1925Drawing and mixed media

Discussion

The moon and red fire stand out against a field of uneven, dark geometric blocks.

Folkwang raises a political question about the painting’s 1933 context without declaring one fixed explanation.

Reader Insights

Close Looking

Which block makes the space seem to advance or recede?

Context

How does the red shape change the way you read its surrounding grid?

Open Question

What does the title make visible that the shapes alone leave open?

Join the Conversation

Share the detail or source behind your reading.

References

  1. Museum Folkwang, Feuer bei Vollmond collection record, English commentary and German provenance: title, medium, dimensions, inv. G 284, probable summer 1933 date, Lily letter excerpt, political question, qualified ownership chain, 1958 acquisition and 2019–20 review, View source.
  2. The Jewish Museum, New York, Paul Klee: Other Possible Worlds exhibition checklist (2026), entries 35 and 36: annual numbers, English and German titles, broad medium, size, lenders and exhibition context, View source.
  3. Zentrum Paul Klee, archival exhibition guide on Klee’s 1933 Düsseldorf suspension, English with German archival material; used for the 21 April summary suspension and later departure sequence, not to assign a specific painted symbol, View source.
  4. Reisser Kunstpostkarten, German postcard technical caption, and ars mundi, reproduction listing. Their egg/wax and 44.1 × 57 cm claims are recorded as unresolved leads, not substituted for Folkwang’s object data.
  5. Artwork reproduction on this page, visually compared with Museum Folkwang’s owner image in reference 1. It is only 400 × 323 px, so formal observations are limited to visible large shapes; no fine material claim rests on it.
  6. Fondation Beyeler, German 2017 Klee exhibition press dossier and French counterpart, same institutional argument in two languages: work identity and comparative geometric-abstraction context, not a layer-level study.
  7. Museum Folkwang, Klee’s September 1933 letter to Lily quoted in reference 1; Ketterer Kunst, German citation of the 21 September 1933 letter, referring to Paul Klee 1933 (Munich 2003), p. 292. The auction commentary is on another 1933 work; the letter is contextual rather than an Feuer bei Vollmond statement, View source.
  8. The Jewish Museum, 2026 complete exhibition texts, caption for Fire at Full Moon and broader exhibition setting. The wall text does not provide a separate object-specific political decoding, View source.
  9. Le Goût des Expos, French review of the 2016 Centre Pompidou Klee exhibition, later critic’s imagined interior/hearth/skylight reading. This is reception, not evidence of Klee’s intended setting, View source.
  10. Museum Folkwang, 2022 schools programme, German educational use of the painting’s puzzle-like blocks and spatial suggestion; not a conservation source, View source.