MS-927, Helia Jarvis Songbook Diary, Michigan Technological University Archives and Copper Country Historical Collections, Houghton, Michigan.
MS-927, Helia Jarvis Songbook Diary, Michigan Technological University Archives and Copper Country Historical Collections, Houghton, Michigan. https://michigantech.libraryhost.com/repositories/2/resources/589 Accessed November 01, 2024.
