November: Calder selects a sculpture from among the works exhibited at Galerie Percier and donates it to the recently founded Museum Sztuki (Museum of New Art) in Lodz, Poland. The work is later lost during World War II. (Calder 1966, 118)

November: Calder exhibits with Abstraction-Creation at Porte de Versailles, Paris and performs Cirque Calder. (CF, Calder to parents, 1 July; Lipman 1976, 331; Calder 1966, 118-121)

Mid-November: The Calders visit Port-Blanc in the Cotes-du-Nord, Brittany. (Calder 1966, 125-126; CF, Louisa to Mother, 30 November)

Calder publishes "Comment realiser l'art?" for the first issue of Abstraction-Creation, Art Non Figuratif. Describing his mobiles, he writes: Each element can move, shift, or sway back and forth in a changing relation to each of the other elements in this universe. / Thus they reveal not only isolated moments, but a physical law of variation among the events of life. / Not extractions, / But abstractions / Abstractions which resemble no living thing, except by their manner of reacting. (Gimenez 2003, 47)

15-28 January: Calder exhibits drawings, including Untitled (Elephants), in "Exposition de Dessins" at Galerie Vignon, Paris. (CF, exhibition file)

15 January-1 February: Calder exhibits two works, including Untitled, in "1940" at Parc des Expositions, Porte de Versailles, Paris. (CF, exhibition file)

7-21 February: Calder exhibits in "The Fifth Annual Exhibition of Modern French Painting" at Renaissance Society of The University of Chicago. (CF, exhibition file)

12-20 February: "Calder: ses mobiles" is held at Galerie Vignon, Paris. Duchamp suggests exhibition title and invitation design. (CF, exhibition file; Calder 1966, 127)

After 12 February: In response to Duchamp's term "mobile," Arp asks, Well, what were those things you did last year [for Percier's]--stabiles? Calder adopts "stabile" to refer to his static works. (Calder 1966, 130)

20-22 February: Calder performs Cirque Calder at his studio in Paris. (AAA, circus poster)