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Manuscripts

E -- Miscellaneous


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    U -- Miscellaneous

    Manuscripts

    U.S. Army Corps of Engineers [re Pettit's involvement with Atomic Bomb Project] (16); U.S. Naval Observatory (2); University of Santa Clara [re Mount Lowe telescope] (2); Albrecht Unsold (2)

    mssPettit papers

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    A -- Miscellaneous

    Manuscripts

    Giorgio Abetti (5); Adler Planetarium (3); Aircraft Radio Laboratory, War Department (2); Allegheny Ludlum Steel Corp. (5); American Association of Scientific Workers (2); American Astronomical Society [Joel Stebbins] (1); "American Defense" [California Institute, Huntington Library, Mount Wilson Observatory Group] (1); American Geophysical Union [Charles Franklin Brooks, letter re C. G. Abbot's proposal --includes carbons of letters from: Helmut Landsberg, Larry F. Page, Harlan True Stetson, Homer Woodworth Clough, & Chaim Leib Pekeris] (10); American Peoples Encyclopedia (11); Clifford Norman Anderson [includes typed manuscript "A Representation of the Sunspot Cycle", copy letter from John Adam Fleming, & copy typed ms. "Solar Radiation and Geomagnetism," by J. Bartels] (6); L. E. Armfield (2); Betty June Arnold (2); Astronomical Society of the Pacific (2); L. d'Azambuja (1)

    mssPettit papers

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    O -- Miscellaneous

    Manuscripts

    Optical Society of America [includes orrespondence with their Journal as well and typed manuscript "The Registering Microphotometer of the Mount Wilson Observatory"] (28)

    mssPettit papers

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    A -- Miscellaneous

    Manuscripts

    Charles Greeley Abbot (6); Robert Grant Aitken (5); American Association for the Advancement of Science (1); American Astronomical Society (2); American Radio Tube Works (2); John August Anderson (2); Astronomical Society of the Pacific (1)

    mssPettit papers

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    A -- Miscellaneous

    Manuscripts

    Charles Greeley Abbot (4); Robert Grant Aitken (6); Laurence Aller (1); American Astronomical Society (1); American Society for Psychical Research [Glenn Palmer] (4); George Angelovich (2); The Antithesians [re "mind energy" photography] (3); Astronomical Society of the Pacific [Charles Hitchcock Adams, includes 2 typed manuscripts "Temperatures on the Moon"] (8); Edward Ayling (2)

    mssPettit papers

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    P -- Miscellaneous

    Manuscripts

    Edwards A. Park (2); The Peruvian (1); Greenleaf Whittier Pickard (3); Edward F. Pigot, S.J. (4); John Stanley Plaskett (1); Aldo Pontremoli (2); Popular Astronomy (2); Irwin Gillespie Priest (10); J. C. du Pui (2)

    mssPettit papers