“The New York Public Library for the Performing Arts has received a gift of thousands of pages of scripts, songs and other pieces of stage memorabilia from two of Broadway’s best-known musical teams: Kander and Ebb, and Bock and Harnick. The donation, ranging from scraps of pure inspiration to less successful discards, gives a glimpse of the sometimes delightful, sometimes devilish backstage grind that went into making classic musicals like Cabaret and Fiddler on the Roof.“