Series contains records from the National League of Musicians, the Musicians' Protective Association, and the American Federation of Musicians dating before 1900. Records include correspondence on union matters, event programs, souvenir publications from national conventions, newspaper clippings on union disputes, convention proceedings, by-laws, newsletters and financial documents and ledgers.

Series contains records from the National League of Musicians, the Musicians' Protective Association, and the American Federation of Musicians dating before 1900. Records include correspondence on union matters, event programs, souvenir publications from national conventions, newspaper clippings on union disputes, convention proceedings, by-laws, newsletters and financial documents and ledgers.