Daily: 10 A.M.–5 P.M.
Closed on Tuesdays
1151 Oxford Road
San Marino, CA 91108
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Additional Formats
[Claus Oesterwinter; Alfred Olmstead; Jan H. Oort {incl ltr OStruve to ISB; c.ltr OStruve to JHO}; P. Th. Oosterhoff {incl memos on project for a European observatory in southern hemisphere}; Donald E. Osterbrock{incl ltr ISB to MLHumason; ltr ISB to GOAbell}]
Bowen
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Additional Formats
[Bob Dalton; M. Dehalu; Kenneth DeHuff; M. Demerec; David Dietz; Harold W. Dodds {incl ltr Arthur Fox's sec'y to ISB}; Helen W. Dodson; A. Dose]
Bowen
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Additional Formats
[Thornton Page {incl c.ltr TP to JJNassau}; Daryl Parker; Cecilia Payne-Gaposchkin {incl ltr Harvard Univ Press to ISB; ltr ISB to HUPress}; Pendray & Co. {G. Edward Pendray}; E. Penkala; P. John Perry {crank{; James S. Pickering {incl ltr Joseph M. Chamberlain to ISB; c.ltr WCMiller to JMChamberlain}; W. H. Pickering {JPL}; S. B. Pikelner; Howard Pohn {& Bruce C. Murray --incl memo WCMiller to ISN}; Daniel M. Popper; Popular Science {Martin Mann}; George W. Preston; Alois T. Purgathofer]
Bowen
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Additional Formats
[W. H. Thiel; Clyde W. Tombaugh; Paul W. Travis; Merle A. Tuve {incl copy ltr MAT to V.Bush; MAT to Leif Owren}]
Bowen
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Additional Formats
[Pete McCobe; S. W. McCuskey; C. S. McDowell {incl copy ltr V.Zworykin to CSM}; Dean B. McLaughlin {ltrs Mrs. Kathryn Weddell (sec'y) to ISB}; Kenneth MacLeish; Mohammed Reday Madwar {copy ltr B.H.Rule}; Mrs. Mary S. Marshall; Sister Mary Therese, BVM; Leo Mattersdorf; Aden B. Meinel]
Bowen
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Additional Formats
[Lyman Spitzer, Jr. {incl ltr ISB to EAA; ltr WJBerkebile to EAA}; Roland R. Stall, Jr.; G. J. Stanley {re 50' interferometer --incl ltr ISB to CPH}; Cyril J. Staud; Dorothy Michelson Stevens; Laurence G. Stoddard; Mrs. Ellen Stortroen {re JAAnderson}; Arthur N. Strahler; Kaj Aage Strand; Mrs. Gustaf Strömberg; Otto Struve; Lucile B. Stryker; W. F. Swann; Loyd S. Swenson, Jr. {re Michelson & Miller}; Pol. Swings {re Houziaux}]
Bowen