United States. Post Office DepartmentBlue line print. Date determined from other maps in series. Includes list of routes. 1 map: 63 x 68 cm.JPEG984dc10d-60f7-4c3e-9c68-0312b17b62c2engPublicMap of Midland County, Michigan, showing rural delivery service.MapsMichigan--Midland CountyMichigan1909University of Michigan