Master Mason certificate issued to Nathaniel P. Steinberg by Waubansia Lodge, No. 160, 1921 January 5, A1978-040-001, Box: 1, Folder: 1. Scottish Rite Masonic Museum & Library.
Master Mason certificate issued to Nathaniel P. Steinberg by Waubansia Lodge, No. 160, 1921 January 5, A1978-040-001, Box: 1, Folder: 1. Scottish Rite Masonic Museum & Library. https://srmml.libraryhost.com/repositories/2/resources/2037 Accessed October 10, 2025.
