MS. Manuscript Collections

Abstract This collection chiefly consists of the administrative, scientific, and personal correspondence of astronomer and Mount Wilson Observatory Director Walter S. Adams (1876–1956), spanning the years 1921 to 1956, and including his work during World War II. There is also material from Adams’ retirement years and his astronomical work. The World War II materials reflect the secret work of Adams and the Observatory staff for the United States government to help create prisms and optics for various...

Abstract Digitized: this collection is available on the web. George Ellery Hale (1868–1938) was an influential astrophysicist and science administrator. This collection of Hale’s scientific, professional, and personal papers documents his roles in inventing the spectrohelioscope; promoting international cooperation among scientists; and founding major observatories, as well as the California Institute of Technology, Huntington Library, Astrophysical...