Discover a rare glimpse into industrial history with this vintage Real Photo Postcard (RPPC) depicting the fascinating process of \"Truing Up a 3 Ton Stone\" in Grind Stone City, Michigan. The evocative black and white image captures a team of dedicated workers meticulously shaping the colossal grinding stone, a testament to the skilled labor and significant industry that defined this unique Michigan locale. The scene provides a vivid portrayal of early 20th-century craftsmanship and the powerful machinery employed in the production of these essential tools. This postcard offers a window into the daily life and economic backbone of a bygone era, making it a compelling piece for collectors of Michigan history, industrial Americana, and vintage labor scenes.The reverse side of this historic postcard features a vibrant 4-cent Abraham Lincoln postage stamp, cancelled with a clear Grind Stone City, Mich. postmark dated JUL 28 1963, 5 P.M. An additional circular postmark from \"Grind Stone City, Rural Sta. USPO\" dated JUL 26 1963 is also present. The postcard bears a handwritten message addressed to Mr. Bryan Ketcham at P.O. Box 15188, Cincinnati 15, Ohio. The publisher\'s information, \"All rights reserved. E.C. Kropp Co., Milwaukee,\" is subtly printed along the left edge. This piece, with its detailed photographic front and rich postal history on the back, serves as a remarkable artifact of both Michigan\'s industrial past and mid-century communication.

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