Among the most famous scientists who ever lived, a world-famous celebrity during his lifetime, theoretical physicist Albert Einstein (1879-1955) developed the special and general theories of relativity, formulations that changed physics forever and indeed had far-reaching consequences for humankind.

These papers include correspondence, notes, lectures, articles, and clippings pertaining to scientific matters.

This scrapbook includes news clippings about Rowland's career at Johns Hopkins University, and his inventions, lectures, public services, and family events.

These are letters and postcards on scientific and personal matters, with a long letter (1958) about Fermi's career from Adolfo Amidei to Emilio Segrè.

This typed autobiography, covering the period from Barus' birth to 1930, includes reports concerning the United States Geological Survey, the United States Weather Bureau, and Barus' work in cloud condensation.

This collection includes correspondence (4 linear feet), diaries, manuscripts of publications, and research data (6 linear feet.). Mooney-Slater (1902- 1981) was born Rose Camille LeDieu and grew up in New Orleans, Louisiana. She received her BS at Newcomb College, MS at Tulane University and PhD from the University of Chicago (1932) where she worked under Will Zachariasen. Recognized as an outstanding crystallographer, she was the recipient of a Guggenheim Fellowship, appointed chair of the physics department at Tulane University, worked at the Metallurgical Laboratory under the auspices of the Manhattan District at the University of Chicago, and on the structure of crystals and crystalline materials using X-ray diffraction.

The Scientists Collection is comprised of individual letters and small groups of correspondence from American, British, French, and German scientists during the past three centuries. Although the content is highly varied, there is significant strength in astronomy, natural history, conchology, and geology. Among the scientists better represented in the collection are the astronomers William Radcliffe Birt, J.F.W. Herschel, and Franz Xaver von Zach; the conchologists A.D. Brown, Fred L. Button, Otto Mörch, Alfred Newton, Christian M. Poulsen, Temple Prime, Benjamin Lewis Vulliamy, and A. G. Wetherby; the physical scientists George Biddell Airy, Arnold Sommerfeld, Ferdinand R. Hassler, and Max Planck; the archaeologist Jean François Nadaillac; the philosopher William Whewell; and the naturalists Walter Henry Bates, Robert Chambers, Edme Dupuget, Robert Kaye Greville, Joseph Henry, John Stevens Henslow, John Lubbock, and Herbert Spencer.

Primary source materials for the history of quantum physics in the twentieth century, collected under the auspices of the American Philosophical Society and the American Physical Society, with a grant from the National Science Foundation.