Daily: 10 A.M.–5 P.M.
Closed on Tuesdays
1151 Oxford Road
San Marino, CA 91108
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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
[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
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Additional Formats
[Byron Hill; Eugene Hlady {folded}; D. K. R. Hodgkin {re William Buscombe}; S. von Hoerner {incl ltr Elizabeth P. Lam to ISB; ltr ISB to EPLam}; Helen Sawyer Hogg {incl c.proposal from D. H. McNamara to NSF}; William V. Houston; C. J. van Houten; Fred Hoyle {c.ltr Robert F. Bacher to FH}; Fernando P. Huberman; Alice Hahn; H. C. van de Hulst; Milton L. Humason {folded}; J. C. Hunsaker; Rev. Earle L. Hutsell; Milton Hyman; J. Allen Hynek]
Bowen
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Additional Formats
[Pacific Optical Corporation {John L. Ryde; Eugene K. Thorburn; 4 photos}; Pasadena City Clerk; Cecilia Payne-Gaposchkin {incl c.ltr ASandage to CP-G}; Lubos Perek {incl 3 ltrs ISB to Wallace R. Brode; 3 ltrs WRBrode to ISB; ltr LP to WBaade; ltr LP to ARSandage}; C. J. Peterson; Lowell Peterson; Robert M. Petric; John Pfeiffer {c.ltr JP to MSchwarzschild}; Calvin Philips, Jr.; A. Keith Pierce {incl c.ltr AKP to GKeller}]
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
[Emil R. Herzog {incl c.ltr WABaum to ERH}; W. A. Hiltner {incl c.report "Spectrographic Experiments with Image Converters at the 100-Inch Telescope," by WABaum + photo}; Hoikusha Publishing Co., Ltd. {H. Murakami}; Horizons of Science {Bert Shapiro}; J. Houtgast {incl ltr MMinnaert to ISB; c.2 ltrs MMinnaert to RRMcMath; ltr RRMcMath to ISB; c.ltr RRMcMath to MMinnaert; ltr ISB to RRMcMath; c.ltr JH to Walter S. Mitchell, Jr.}; Léo Houziaux; Humble Touring Service; Alan Hunter; Max W. Hunter {c.ltr AJDeutsch to MWH}]
Bowen