Scope and Contents From the Collection: Acc. 2007.92: Original and copies of individual parts for musical instruments and scripts for voices for five ballad operas: Robin Hood, Devil to Play, Mock Doctor, Thomas and Sally and the Beggar's Opera. Photographs, copies of miscellaneous theater airs and songs, research material, programs, posters, and working papers. These operas were performed by Friends of Dr. Burney who later changed their name to Boston Musical Theater and were directed by Charlotte Kaufman....