Bernstein, Leonard. (1918–1990) Original Photograph with his Personal Ownership StampOriginal portrait photograph, c. 1940, by Emerich Kastan. On the verso, in addition to numerous later stamps, is Bernstein's personal blue ownership stamp. The young conductor used this stamp through his early career, including while at Harvard, to mark the books in his library and to identify publicity photographs which at this early stage, he was probably distributing himself! 8 x 10 inches, very unusual.