found: Weill, K. Kurt Weill's The threepenny opera, c1984:cover (English adaptation of book and lyrics by Marc Blitzstein)
found: Baker's Biog. dict. of mus., 1984(Blitzstein, Marc; b. Philadelphia, 3/2/1905; d. Fort-de-France, Martinique, 1/22/1964)
found: The cradle will rock, c1938:cover (words and music by Marc Blitzstein) caption (Marc Blitzstein)
found: The new Grove dictionary of music and musicians, 1980:volume 2 (Blitzstein, Marc; his musicals often included social commentary and political satire)
found: Wikipedia, October 8, 2014(Marcus Samuel Blitzstein, better known as Marc Blitzstein; American composer, lyricist, and librettist)