Seyffardt & Walz, 1881-06-07, 1883-05-31, 1885-09-02, 1886-09-08, 1886-08-31, 1889-06-05, 1889-07-30, Container: Letterheads of Saginaw Businesses - Box 1, Folder: Four. Business and Industry, COL-BUSINESS. Hoyt Library Archives. https://archive.saginawlibrary.org/repositories/2/archival_objects/12013 Accessed December 15, 2025.