I'm writing a novel about a Broadway musical that did its out-of-own tryout at the Boston Shubert (now the Boch Center - Shubert Theatre) in the 1960s. Is there anyone who can give me a few details about the backstage? How to access the stage door, the location of the dressing rooms, etc. I don't need much. Just enough for ambience. Thanks for any light you can shed. (I know it's a long time ago, but in my experience backstage configurations in classic theaters don't change much.)