Leon Katzinger is the principal of Auburn Elementary School and author of Bay City: 1900-1940 in Vintage Postcards, also published by Arcadia. He is a past president of the Bay Cou...view moreLeon Katzinger is the principal of Auburn Elementary School and author of Bay City: 1900-1940 in Vintage Postcards, also published by Arcadia. He is a past president of the Bay County Historical Society, and has long been a collector of postcards, stereoview cards, and other artifacts related to Bay City history.view less