Konstytucya Prawa i Reguly Domu Polskiego Hali Kosciuszko, 1915, Container: United Polish Societies - Box 6 (Miscellaneous Societies), Folder: 6. Organizations, RG-ORGANIZATIONS. Hoyt Library Archives. https://archive.saginawlibrary.org/repositories/2/archival_objects/32457 Accessed July 10, 2026.