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Mapping the National Parks
This collection documents the history, cultural aspects, and geological formations of four areas that eventually became National Parks. The maps date from the 17th century to the present for Acadia, Grand Canyon, Great Smoky Mountains and Yellowstone. Nautical charts are included for Acadia. Part of the Library of Congress American Memory Collection.
http://memory.loc.gov/ammem/gmdhtml/nphtml/nphome.html

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