Labor Day on the Mackinac Bridge, Michigan - Vintage Postcard

On front: A photo of the Mackinac Bridge full of cars and pedestrians 
On back : The Mackinac Bridge Connecting Mackinaw City and St. Ignace, Michigan. Thousands of people of all ages are seen here enjoying the special annual Labor Day walk across the 5 mile bridge spanning the straits of Mackinac. It is the only day walking is allowed on the bridge.
Condition: good, minor aging on front and back
Unmailed:
Color print  
Publisher: Upper Michigan Card Co.  

**Our vintage postcards may have signs of wear or production imperfections.  Bending, foxing, soft corners or tears will be noted in the description; photos are part of the descriptions. Questions welcome. Thanks for shopping!