I am back from the NYPL and quite informed about ROBERTA. The card catalogue for the Theatre Collection says they have clippings for "Gowns By Roberta," but there was no card for programmes of the tryout. So, I looked at a lot of programmes for ROBERTA from the opening week in 1933 to to the last staging in NYC which invented a lady named Masha to sing a reprise of "Smoke Gets In Your Eyes." On a whim I filled out a slip for programmes for GOWNS BY ROBERTA, and I got a run of the Forrest Theatre, Philadelphia, tryout programs, even though the catalogue doesn't list them!
So many questions answered. By the 1934 post-Broadway tour, Bob Hope, George Murphy, and Fred MacMurray were heading off to Hollywood stardom.