Frank Gray advertising card collection, 1910-1920, A1977-006, Box: 4, Folder: 1. Scottish Rite Masonic Museum & Library.
Frank Gray advertising card collection, 1910-1920, A1977-006, Box: 4, Folder: 1. Scottish Rite Masonic Museum & Library. https://srmml.libraryhost.com/repositories/2/resources/2311 Accessed January 14, 2026.
