• 2 Wisconsin Historical Society Library

• 3 Journals, Magazines, Newspapers

• 2 Labor unions
• 2 Musicians
• 1 African Americans
• 1 American Guild of Musical Artists
• 1 History and criticism
• 1 Popular music
• 1 Societies, etc

• 1 American Federation of Musicians. Local no. 47 (Los Angeles, Calif.)
• 1 American Guild of Musical Artists
• 1 Musicians Mutual Protective Association (Los Angeles, Calif.)

• 1 Spanish

• 2 United States
• 1 California
• 1 Los Angeles

Limit year range