Manuscripts
R -- Miscellaneous
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R -- Miscellaneous
Manuscripts
Radi-Ion Corp. (1); Lord Rayleigh (3); Arthur R. Riddle (2); William F. Rigge, S.J. (4); The Rockefeller Institute for Medical Research (1); R. S. Rockwood (5); Frank Elmore Ross (10); Royal College of Science, Canada (1); Henry Norris Russell (2); Walter Charles Russell (2)
mssPettit papers
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R -- Miscellaneous
Manuscripts
R[adio] C[orporation of] A[merica] Communications, Inc. (2); Emery L. Radwany (2); Lee Ad. Richmond (2); Walter Orr Roberts (3); Henry Norris Russell (4)
mssPettit papers
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L -- Miscellaneous
Manuscripts
Frederick Charles Leonard (5); Isabel M. Lewis (2); Library Association of Portland, Oregon (1); W. M. Lindley (3); The Literary Digest [draft of letter to O. C. Nichols on back] (1); Los Angeles Astronomical Society [Mars F. Baumgardt] (1); Hazel Marie Losh (3)
mssPettit papers
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B -- Miscellaneous
Manuscripts
Frederick A. Baker (1); E. P. Baltzell (2); R. W. Barfield (3); M. S. Beljavsky (1); Nels A. Bengton (1); George C. Blakslee (1); Nicholas Theodore Bobrovnikoff (3); The Brooklyn Institute of Arts and Sciences (3); Herbert Brownell (8); Robert C. Burt (1); Julio Bustos Navarrete (1)
mssPettit papers
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R -- Miscellaneous
Manuscripts
R & M Electric Sign, Co. (1); Radio Press Service (1); Paul Rudnick (2); C. F. Rust (7)
mssPettit papers
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B -- Miscellaneous
Manuscripts
Ren J Bache (3); Lloyd C. Bagby (4); Baker & Co., Inc. (3); George Banta Publishing Co. (1); Edward Emerson Barnard (1); Storrs Barrows Barrett (7); Bausch & Lomb Optical Co. (10); James G. Biddle (17); Paul Biefeld (4); Herbert Brownell (2); S. M. Brownell (1); Bertram Borden Boltwood (1); John A. Brashear & Co. [see J. B. McDowell Co.]; The Braun Corporation (1)
mssPettit papers