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This work is included in the Provenance Research Project, which investigates the ownership history of works in MoMA's collection.
Acquired from the artist by Sally Falk (1888-1962), Mannheim, October 3, 1916 ; gift to the Kunsthalle Mannheim, August 5, 1921 ; removed as "degenerate art" by the Reich Ministry for Public Enlightenment and Propaganda, 1937 ; on consignment to Karl Buchholz, Berlin; to Curt Valentin (Buchholz Gallery), New York; acquired by The Museum of Modern Art, New York, 1939 (Abby Aldrich Rockefeller Fund) .
 Roland Dorn et al., Stiftung und Sammlung Sally Falk, Mannheim: Städtische Kunsthalle, 1994, p. 86. Acquired from the artist at the Kollektivausstellung Wilhelm Lehmbruck, Kunsthalle Mannheim, November 12-December 6, 1916 (no. 4: Knieende). On loan from Falk to the Kunsthalle Mannheim since March 1917.
 Ibid. Inventory number S 518.
 EK number 15030: Knieende.
 Included in the exhibition Art in Our Time: 10th Anniversary Exhibition, The Museum of Modern Art, May 10-September 30, 1939, no. 270.
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