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1877 Astronomical observatory, Ogden, Utah. Exploration Book Plan and elevation of the astronomical o … |
1877 Topographical sketch, observatory site, … Exploration Book Topographical sketch showing observatory … |
1877 Apparatus for determining absolute perso … Exploration Book Apparatus for determining absolute perso … |
1877 Winnemucca, Ft. Fred Steele, Laramie, Gr … Exploration Book Sketch of Winnemucca, Nevada showing pos … |
1877 Pioche, Virginia City, Hughes, Colorado … Exploration Book Sketch of Pioche, Nevada showing positio … |
1877 Beaver, Cheyenne, Fort Union, Georgetown … Exploration Book Sketch of Beaver, Utah showing position … |