Constantin Brancusi – Bird in Space – The Metropolitan Museum of Art https://www.metmuseum.org/art/collection/search/486757
John Quinn, New York (1923–d. 1924; purchased from the artist in December 1923 for Fr 25,000; his estate, 1924–26; sold in 1926 through Brummer Gallery, New York to Duchamp and Roché); Marcel Duchamp and Henri-Pierre Roché (1926; sold in 1926, for $1,000, to Levy); Edgar A
Lemny 2003, p. 154]. "John Quinn’s Collection."
