Schaumperlen; solo piano; music by: Gustav Lange; lyrics by: none; publisher: Century Music Publishing Co.; Toronto, Canada; notes: x, undated

Schaumperlen; solo piano; music by: Gustav Lange; lyrics by: none; publisher: Century Music Publishing Co.; Toronto, Canada; notes: x, undated, Box: 4, Folder: 2. West Virginia Sheet Music, A&M 0723. West Virginia and Regional History Center. https://archives.lib.wvu.edu/repositories/2/archival_objects/142443 Accessed November 23, 2024.