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Manuscripts

I -- Miscellaneous


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    A -- Miscellaneous

    Manuscripts

    Charles Greeley Abbot (3); Giorgio Abetti (3); Robert Grant Aitken (5); American Council on Education, Committee on Graduate Instruction (2); American Economic Foundation [Percival White] (1); American Geophysical Union (5); American Philosophical Society (3); H. J. Andrews (1); Apex Films Inc. (1); Astronomical Society of the Pacific [Paul Willard Merrill] (1)

    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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    I -- Miscellaneous

    Manuscripts

    Industrial Digest (3); International Astronomical Union (3); Joseph C. Ireland (2); James Edmund Ives (1)

    mssPettit papers

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    I -- Miscellaneous

    Manuscripts

    International Astronomical Union (3); H. J. C. Ireton (1); Clarke Irvine (2); James Edmund Ives [U.S. Public Health Service] (3)

    mssPettit papers

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    F -- Miscellaneous

    Manuscripts

    Charles Fabry (1); Mary J. Faherty (2); Sampaio Ferraz (2); Fish-Schurmann Corp. (7); John Adam Fleming [American Geophysical Union] (5); William Elmer Forsythe [General Electric Nela Park] (6); The Franklin Institute (2); Edward Elway Free (5); Erwin Finlay Freunldich (1); Julien P. Friez & Sons (1); Edwin Brant Frost (13)

    mssPettit papers

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    K -- Miscellaneous

    Manuscripts

    M. E. Kahler (1); Kay & Burbank Co., Inc. (1); Keese Engineering Co. (1); Norton Adams Kent (2); Herbert Harvey Kimball [American Geophysical Union] (10); P. J. Kipp & Zonen [includes J. J. van Oortmerssen] (5); Alfred Brooker Klugh (6); H. Kobold (1); Harry I. Krakeur [sp.?] (1); Jakob Kunz (3)

    mssPettit papers