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Chronometers like this one by Charles Frodsham were used on the U.S. Exploring Expedition (1838-1842).
Chronometers like this one by Molyneaux & Son were used on the U.S. Exploring Expedition (1838-1842).
Chronometers like this one by Parkinson & Frodsham were used on the U.S. Exploring Expedition (1838-1842).
Mask, Oregon Territory
Mice, Funafuti Atoll (Mus exulans, Mus vitiensis)
The Motorola LGT 1000 was used for better accuracy by scientists.
This mid-1950s era VOR receiver helped usher in a new era of all-weather navigation capability for light aircraft at moderate cost.
Lt. Micajah G. L. Claiborne's remarks about navigation observations during the expedition.
Parrots, Fiji (Aprosmicturs splendens, Aprosmictus personatus)
Pipe, Oregon Territory
