Whelpley, ThomasA survey map detailing islands in the portion of the Kalamazoo River that runs through sections 3 and 10 of Trowbridge Township in Allegan County, Michigan. This land was measured in 1850.JPEG20003d6e11de-3960-4cd4-9468-3e8b7d0a27d4MI-T001N-R013WengDepartment of Natural Resources8888-003Public01N 13W - Survey Map of Trowbridge Township, Allegan County, Page 2 [Michigan]MapsMichigan--AlleganT001N-R013W1850