Title: Survey of Saginaw River, Thunder Bay, Clinton and Au Sable Rivers, Michigan. Letter from the Secretary of War, transmitting, in compliance with the requirements of the river and harbor act, March 3, 1875, a report of Major G. Weitzel, on Saginaw River, Thunder Bay, Clinton River, and Au Sable River, Michigan
Subjects: Topographical surveying
Places: Clinton River (Mich.), Saginaw River (Mich.)