Picture Courtesy of
Menominee County Historical Society, Inc.
& the Michael J. Anuta Research Center
Signal Electric Manufacturing Company, which was located in Menominee, Michigan is of interest to, among others, collectors of the company's telegraph keys. I've collected some information on the company history and it's products. The source of this material is the Menominee County Historical Society.
Earlier (circa 1920's) Brochure (tnx W9OP)
History of Signal Electric Company