Daily: 10 A.M.–5 P.M.
Closed on Tuesdays
1151 Oxford Road
San Marino, CA 91108
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Additional Formats
[J. L. Pawsey; Cecilia Payne-Gaposchkin; Richard S. Perkin {ltr RSP to DOHendrix; note DOHendrix to ISB}; R. M. Petrie; Ivan Peyches {incl ltr Eugene C. Sullivan (Corning) to ISB; ltr Ed. Condon to ISB}; John G. Phillips; Philosophical Library {Robert E. Pike; Ralph B. Winn}; H. H. Plaskett {incl c.ltr HWBabcock to HHP}; L. Plaut; Harry E. D. Pollock; Daniel M. Popper; Lloyd C. Pray; Nathan M. Pusey {re Harvard College Observatory directorship. Incl ltrs McGeorge Bundy to ISB]
Bowen
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Additional Formats
[A. K. Das.; Watson Davis {incl ltr Clarence H. Low to WD}; M. Demerec {copy of rprt of CIW Directors' Conference and Meetings, Washington, Dec. 9-12, 1949}; Armin J. Deutsch {incl ltr Harlow Shapley to ISB; ISB to HS; Robert Richardson to ISB}; Francis N. Dlouhy {incl fldd ltrs; diagrams; copy ltr NND to Editor of Science}]
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
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Additional Formats
[James M. Parker; [?] Pate; Cecilia H. Payne-Gaposchkin{incl copy ltr Louise Lowen to CP-G}; Henry F. Pearl; Richard S. Perkin; R. M. Petrie; John G. Phillips; Keith Pierce; Mrs. Pearl Marie Pilgrim; Karl Pittelkow {incl copy ltr B.H.Rule to KP}; H. H. Plaskett; Harry E. D. Pollock; Dudley G. Poore; Daniel M. Popper]
Bowen
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Additional Formats
[Amos Leon Parker {folded}; Joseph A. Pearce; Willis E. Pequegnat; Richard S. Perkin; R. M. Petrie {incl ltrs OCWilson to KOWright}; Gerard Piel; Keith Pierce; George V. Pippy; H. E. D. Pollock; Daniel M. Popper; Public Utilities Commission, State of California]
Bowen
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Additional Formats
[John S. Hall; Richard T. Hansen; Guillermo Haro {incl c.ltr RMinkowski to GH}; Harvard College Observatory; Roger Harris; George R. Harrison {incl ltr VBush to ISB; c.2 ltrs HWBabcock to GRH; c.2 ltrs GRH to HWBabcock}; D. S. Heeschen {AURA}; Erich P. Heilmaier K.; H. Lawrence Helfer; C. T. Helstrom]
Bowen