Railroad: Detroit, Grand Rapids & Western Railroad Company
Various → Detroit Grand Rapids & Western RR → Pere Marquette
Consolidated lines: In 1897 (see below).
Became: PM in 1899
Consolidated Detroit, Lansing & Northern, Grand Rapids, Lansing & Detroit, Saginaw and Grand Rapids, Saginaw Valley and St. Louis, and Saginaw and Western in 1897. Two years later into Pere Marquette system.