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Remote Sensing
Finding aid
Victor B. Elstad and William H. Klein cutting the hypocotyl hook out of each bean seedling and placing hypocotyl hooks in the Petri dishes that can be seen in the center, c. 1961. (Image no. SIA2011-0541)
Secretaries of the Smithsonian Institution, (l-r) Leonard Carmichael (seventh Secretary, 1953-1964), Charles Greeley Abbot (fifth Secretary, 1928-1944) and Alexander Wetmore (sixth Secretary, 1944-1952) standing in front of an exhibit in the United States National Museum, now known as the National Museum of Natural History, circa …
Francis P. Conant Papers
Walter Guyton Cady Papers
Calculations