Roxbury, 1944. From left to right: Luis Masson, Diego Masson, Calder and André Masson, and Mrs. Mario Pedrosa

Calder in his Roxbury studio, 1944

Photograph by Eric Schaal

Installation photograph, Alexander Calder: Mobiles, Stabiles, Constellations, Galerie Louis Carré, Paris, 25 Oct.-16 Nov. 1946

Calder installing The Root (La racine), 1947 (A00867), for Alexander Calder, at Buchholz Gallery/Curt Valentin, New York, 9-27 December 1947

Calder installing Gamma, 1947 (A10838), for Alexander Calder, at Buchholz Gallery/Curt Valentin, New York, 9-27 December 1947

Calder installing International Mobile, 1949 (A01158), for the 3rd International Exhibition of Sculpture at the Philadelphia Museum of Art (in collaboration with the Fairmount Park Art Association), 15 May-11 Sept., 1949

Life Magazine, Gehr

Installation photograph, Calder, Massachusetts Institute of Technology, Cambridge, 5 Dec. 1950-14 Jan. 1951

Photograph by Ezra Stoller

Calder with Myxomatose, 1953 (A08122), Paris

Photograph by Agnès Varda, 1954

Aula Magna, 1954 (A00181), Caracas, Venezuela

Photograph by Paolo Gasparini

Calder with Yellow Disc, 1953 (A05373), Paris

Photograph by Agnès Varda, 1954