Grindstone City Sign Postcard 1940

Black and white postcard from approximately 1940 showing the grindstone memorial – the inscription reads: “In Memorium of the Grindstone City Pioneers 1635 – 1938” -at Grindstone City, Michigan.

Michael Hardy

Michael Hardy is the owner of Thumbwind Publications LLC. Michael was born in Michigan and grew up near Caseville. In 2009 he started this fun-loving site covering Michigan's Upper Thumb. Since then, he has authored a vast range of content and established a loyal base of 60,000 visitors per month.

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