Vintage Mammoth Cave National Park Postcards Set of 6 Mirro-Krome H.S. Crocker For Sale

Vintage collection of 11 postcards from Mammoth Cave National Park in Kentucky. This set features various iconic locations within the cave system, including Fat Man's Misery, Saltpetre Pipes and Leaching Vats, Frozen Niagara, and the Ruins of Karnak. Published by National Park Concessions, Inc., these Mirro-Krome cards by H.S. Crocker Co. capture the historic and geological beauty of the park. Each card includes descriptive text on the reverse side, providing historical context about the mining operations and natural formations. The cards are unposted and feature a "7-89" date stamp in the stamp area. Perfect for collectors of national park memorabilia or vintage travel ephemera.

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