Description: A 1936 exchange of letters about the prickly porcupine preserves both a contemporary scientific debate and the wit and wisdom of a young Utah girl with a beloved pet.
Description: Henry David Hubbard (1870-1943), a physicist at the U.S. National Bureau of Standards, designed the first edition of the "Periodic Chart of the Atoms" in 1924. The chart is still in use today, continually updated to reflect new elements.
Description: A rare meeting of the scientific minds at the 92nd Annual British Association Conference in 1924, captured by Science Service journalist Watson Davis.
Description: In the U.S. Department of Agriculture (USDA) Office of Exhibits, Margaret Jane Russell Roller (1888-1973) had begun to specialize in fabricating lifelike wax models of food and animals.
Description: President Calvin Coolidge's second inauguration in 1925 reaches an audience of millions, thanks to a new technological innovation--the radio.
Description: The historical legacy of amatuer photographer Julian Papin Scott (1877-1961) is far greater than was acknowledged at the time, because of both who he photographed and how he set up the images.
Showing results 61 - 69 of 69 for Smithsonian Institution. Assistant Secretary for Science