Library of Congress
Authorities & Vocabularies
found: Bach, J.S. Toccata and fugue in D minor for the organ, c1956: t.p. (transcribed for the piano by Joseph Prostakoff)
found: Helps, R. New music for the piano [SR] p2001: insert (Joseph Prostakoff; b. 1911, Kokand, Central Asia, d. 1980; came to U.S. in 1922)
found: Social Security death index on ancestry.com, Apr. 26, 2001 (Prostakoff, Joseph; b. Sept. 20, 1911, d. Dec. 1980)
notfound: New Grove, 2nd ed.;Baker's bio. dict. of twentieth-century classical musicians;Baker, cent. ed.