- MS-5-1, Box 4, Folder 14
- 1912-1913, 1924-1925
Part of John Daniel Logan fonds
File contains a prospectus for the Hambourg Conservatory of Music, directed by Boris Hambourg with visiting director Mark Hambourg. The prospectus includes lesson costs per class for instruments, theory, history, and language. The file also includes John Daniel Logan's member's ticket for the 1912-1913 season of the Hambourg Concert Society (directed by Michael Hambourg, Jan Hambourg, and Boris Hambourg).