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1858 Ft. Kearney South Pass & Hon … Exploration Book Preliminary Map of the Centr … |
1858 Map No. 1 of the El Paso & F … Exploration Book Map No. 1 of the El Paso & F … |
1858 Map No. 2 of the El Paso & F … Exploration Book Map No. 2 of the El Paso & F … |
1858 Map of the Wagon-Road from P … Exploration Book Map of the Wagon-Road from P … |