Dena Julia Polacheck Epstein (30 November 1916 -- 14 November 2013) was an American music librarian, author, and musicologist. Epstein was born in Milwaukee to William Polacheck and Hilda Satt. _She_ studied music at the University of Chicago and library science at the University of Illinois, graduating in 1943. <sep>, Pronoun: She <sep>, A: Epstein <sep>, B: Hilda Satt