Reverse:
Halfway Between Equator and North Pole 45th Parallel – Along U.S. 27
In Michigan – The Water Wonderland
Publisher:
Hiawatha Card Co., Mackinaw City, Michigan
MNM#01-07036
Circa-1960s postcard image of the 45th Parallel Sign at Gaylord, Michigan
View 45th Parallel Markers in Google Maps
