Postal Telegraph-Cable Company, 1901-01-31, 1890-03-31, 1892-04-15, 1893-01-31, Container: Letterheads of Saginaw Businesses - Box 1, Folder: Three. Business and Industry, COL-BUSINESS. Hoyt Library Archives. https://archive.saginawlibrary.org/repositories/2/archival_objects/11982 Accessed December 15, 2025.