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Adult Black Fly (Simulium yahense) with parasite (Onchocerca volvulus) emerging from the insect's antenna | Electron and Confocal Microscopy Laboratory, Agricultural Research Service, U. S. Department of Agriculture
Plate 23 from "The cyclophorid operculate land mollusks of America"
Carlos de la Torre y la Huerta (1858-1950) | Smithsonian Institution Archives, Accession 90-105 - Science Service, Records, 1920s-1970s, SIA2008-0963
Illustration of Carlos de la Torre y Huerta | Smithsonian Institution Archives, Record Unit 7418, National Museum of Natural History, Division of Mollusks, Photograph Collection, Box 2
Photograph of mollusk specimens collected by Carlos de la Torre y Huerta | Smithsonian Institution Archives, Record Unit 7418, National Museum of Natural History, Division of Mollusks, Photograph Collection, Box 2
Carlos de la Torre y Huerta at a microscope | Smithsonian Institution Archives, Carlos de la Torre y Huerta, Record Unit 7089, Bartsch, Paul, 1871-1960, Paul Bartsch Papers, Box 16
Cyathea albidopaleata type specimen from Smithsonian Institution, National Museum of Natural History, Department of Botany
Piper armatum type specimen from Smithsonian Institution, National Museum of Natural History, Department of Botany
Mexia at table, 1937 | © California Academy of Sciences
Apaloderma narina painted by Louis Agassiz Fuertes from "Album of Abyssinian birds and mammals"
Hikers looking at Mt. Lyell, Yosemite National Park circa 1919-1930
Table of contents from "Contributions from the Gray Herbarium of Harvard University, v. 45"