W.F. Twelvetrees & Company, 1891-11-13, 1892-03-12, 1889-10-31, 1889-11-30, 1890-01-06, 1897-03-23, Container: Letterheads of Saginaw Businesses - Box 1, Folder: Five. Business and Industry, COL-BUSINESS. Hoyt Library Archives. https://archive.saginawlibrary.org/repositories/2/archival_objects/12027 Accessed December 06, 2025.