Daily: 10 A.M.–5 P.M.
Closed on Tuesdays
1151 Oxford Road
San Marino, CA 91108
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Additional Formats
[John S. Hall {c.ltr JSH to John Irwin}; Robert Hardie {c.ltr WABaum to RH}; Emerson Hartong {ltr of passage ISB}; Sherwood K. Haynes; John F. Heard {folded}; George H. Herbig; Byron Hill {incl ltr MtWilson & Palomar staff to ISB}; W. A. Hiltner {c.ltrs BHRule to WAH}; W. G. Hingston; Arthur R. Hogg; Holiday {Carl L. Biemiller}; Erik Holmberg; Ralston Holmes; J. Hopmann; Fred Hoyle; Edwin P. Hubble; C. M. Huffer; Milton L. Humason]
Bowen
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Additional Formats
[Grace Hawk; Walter S. Heller; Donald O. Hendrix; Joseph Q. Heplar; George H. Herbig; Paul Herget; Samuel Herrick, Jr.; Hilger & Watts, Ltd. {J. W. Perry}; Byron Hill; W. A. Hiltner {incl c.ltr BHRule to WAH; c.ltr WAH to BHRule}; Edison R. Hoge; A. R. Hogg; Leo Hollenberg; Alice W. Hood; Hubert V. Hopkins; Inga Howard; Edwin P. Hubble; Grace Hubble; Milton L. Humason; W. S. Huxford; J. A. Hynek]
Bowen
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Additional Formats
[John S. Hall; James W. Harman, Jr.; Robert C. Hartman; Harvard Alumni Bulletin {Cynthia Gabrielli}; Margaret Harwood; Caryl P. Haskins {some re Robert J. Zinn}; Robert F. Heilbron; Karl G. Henize; William A. Hiltner; August Hoffmann; C. Hoffmeister; John R. Howe, Jr.; Milton L. Humason]
Bowen
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Additional Formats
[Byron Hill {incl c.ltr Photo Lab (Mt. Wilson) to BH}; W. A. Hiltner; Erik Holmberg; Robert E. Holzer; Edwin P. Hubble; C. M. Huffer; M. L. Humason; J. Allen Hynek {incl ltr PWMerrill to JAH}]
Bowen
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Additional Formats
[Harold B. Hill; William A. Hiltner; Arthur A. Hoag; Paul Hodge; A. R. Hogg; David E. Hogg; Erik Holmberg; Dilys Holter; William E. Hough; Houghton Mifflin Co. {Sandra P. Hewlett}; Léo Houziaux; Robert F. Howard {re MNGnevyshev}; John R. Howe; Grace Hubble; Milton L. Humason; Charles L. Hyder]
Bowen
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Additional Formats
[George H. Herbig {incl c.ltr GHH to BHRule; c.ltr BHRule to GHH}; Donald G. Herold; Byron A. Hill {incl c.ltr WABaum to BH}; W. A. Hiltner {incl c.ltr WAH to HWBabcock}; Frederick Hilton; Arthur A. Hoag; J. G. Hopewell; Erich Hösel; T. E. Houck; Robert F. Howard; Guillermo Hoxmark; Glen Hughes; Milton L. Humason; Hunter Films Limited {P. Darvill}; J. Allen Hynek]
Bowen