Bundesamt für zentrale Dienste und offene Vermögensfragen webpage, viewed Sept. 24, 2012 (Gustav Cramer was an old master dealer; in 1933 the gallery opened in Berlin in Germany; in 1938 the gallery moved to The Hague in the Netherlands; in 1942 the ownership was transferred to Gustav Cramer's son Hans Max Cramer)
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G. Cramer Oude Kunst gallery records 1901-1998 (bulk 1938-1998) (G. Cramer Oude Kunst; Gustav Cramer c.v. Oude Kunst; Galerie G. Cramer; Galerie Cramer; Antiquit$04aten Gustav Cramer)
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GRIL NACO contribution (n.d.)
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Library of Congress Authorities online (2002-) http://id.loc.gov/authorities/names/no2012130227 | | |