September 5, 1970, Appleton Post-Crescent
We've visited James Island in the past http://menashabook.blogspot.com/2015/02/james-island.html and http://menashabook.blogspot.com/2015/02/more-on-james-island.html but it took this article for me to discover it'd been left off official maps for a long, long time. (Sometimes I am so blind to the obvious.)
Nevertheless, it might have given Menashans a complex enough to secede, as Winneconne tried to do in 1967 after being left off the official state road map. But obviously, cooler heads prevailed in our case. In time, Menasha has taken ownership of the island, enough so that it is listed as one of its "Special Use Parks and Facilities" in the city's Open Space and Recreation Facilities Plan of 2007.