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1859 Map of the Fort Ridgely & South Pass Roa … Exploration Book Map of the Fort Ridgely & South Pass Roa … |
1858 Ft. Kearney South Pass & Honey Lake Wago … Exploration Book Preliminary Map of the Central Division … |
1858 Map of the Wagon-Road from Platte River … Exploration Book Map of the Wagon-Road from Platte River … |