Sanborn Fire Insurance Maps of MichiganThe Sanborn Map Company worked from the 1870's to the 1970's to create very large scale maps of thousands of towns in America. They show hard-to-find information about the history of cities and towns.
They don't say who owned plots of land (like plat books do for farmland) but they do show all the buildings, their addresses, and in commercial areas the type of business establishment in each building.
