Description: Unidentified female works with a Periodometer, a machine invented by fifth Smithsonian Secretary Dr. Charles Greeley Abbot that analyzes solar records.
Description: Fish specimens in jars at the Smithsonian Oceanographic Sorting Center (SOSC), June 6, 1979, by Richard Hofmeister, SIA RU000371, 79-7303-16A.
Description: Smithsonian Secretary Samuel Pierpont Langley at Quantico, Virginia, on the day of the test flight of Aerodrome No. 5 on the Potomac River, by Alexander Graham Bell, MAH-18836.
Description: This blog post was edited in October 2021 for clarification. While surveying and collecting specimens in the Aleutian Islands in 1871-1872 for the United States Coast Survey, later renamed the United States Coast and Geodetic Survey, naturalist William Healey Dall befriended George Tsaroff (1858-1880), an Unangan (Aleut) teen from Unalaska Island who had been hired as local
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