Freemasons Hall, Zurich postcard, undated, A1987-271-001, Box: 1. Scottish Rite Masonic Museum & Library.
Freemasons Hall, Zurich postcard, undated, A1987-271-001, Box: 1. Scottish Rite Masonic Museum & Library. https://srmml.libraryhost.com/repositories/2/resources/4653 Accessed December 12, 2025.
