Daily: 10 A.M.–5 P.M.
Closed on Tuesdays
1151 Oxford Road
San Marino, CA 91108
Image not available
Additional Formats
[Dean B. McLaughlin; Mary Macphee; Oscar S. Marshall; M. R. Marston {incl 1 ltr MRM to Bruce Rule; 1 copy ltr RRMcMath to MRM}; Max Mason; Margaret W. Mayall; Nicholas Mayall {incl 1 copy ltr NM to R.Minkowski; 1 copy ltr NM to MLHumason}; William F. Meggers {incl copy mss "Designation of Miscellaneous Atomic Energy Levels," by Charlotte E. Moore & "Notes on Spectroscopic Notation," by H.N.Russell}; Aden B. Meinel {incl 1 photo of Infrared spectrum of night sky}; Donald H. Menzel {incl 1 copy ltr DHM to J.J.Nassau}; J. Glenn Menzel {incl 1 ltr JGM to Harley Marshall}; Madeline Gwynne Merchant; Orren C. Mohler; Phil Morgan; Thomas F. Murray]
Bowen
Image not available
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
Image not available
Additional Formats
[Leona Marshall {incl c.ltr LAD to LM}; Sister Mary Ildephonse, O.S.B.; A. Massevitch; John Mathis; Thomas Arnold Matthews; Nicholas U. Mayall; L. A. Alting Mees; Jean Meffroy; William F. Meggers {c.ltr ISB & PWMerrill to WFM}; Donald H. Menzel {incl c.ltr WFMeggers to DHM; c.ltr DHM to HLDryden}; Paul W. Merrill; Harvey A. Miller; Joseph R. Miller {crank}]
Bowen
Image not available
Additional Formats
[J. Howard McMillen {NSF -re SYCh'en}; Frank J. McMullen; D. H. McNamara {incl ltr DHMcM to OCWilson; c.memo JLGreenstein to ISB}; E. J. Macomb; Sister Mary Therese, BVM; Robert Arthur Matthews {incl ltr written by RAM under pseudonym "Robert Florey"}; Thomas A. Matthews; D. M. May; N. U. Mayall; Donald H. Menzel {incl c.ltr OStruve to DHM; c.ltr OStruve to James Marshall; c.ltr DHM to David McK. Key; c.ltr ARSandage to DHM; c.ltr DHM to LSpitzer}; Paul W. Merrill; l. Mestel; G. R. Miczaika; William C. Miller; M. Minnaert; Alvin L. Mitchell; Henry Allen Moe; Orren C. Mohler; George W. Morey; William Wilson Morgan]
Bowen
Image not available
Additional Formats
[{Mrs.} Alice MacIntyre {NRC}; R. E. Marshak; Margaret Matson; Sister Mary Therese, BVM; Nicholas U. Mayall; Donald H. Menzel {incl c.ltr DHM to WBaade}; G. R. Miczaika; Max B. Miller; Rev. Walter J. Miller, S.J.; William A. Miller; William C. Miller; Peter H. Millman; Rudolph Minkowski {& ADeutsch, Guido Münch, and SBNicholson}; Henry Allan Moe; Orren C. Mohler; George W. Morey; Guido Münch]
Bowen
Image not available
Additional Formats
[Flora M. McBain; W. H. McCrea {re MLHumason}; Victor C. McKee; Andrew McKellar; Dean B. McLaughlin; D. H. McNamara; G. C. McVittie; M. R. Madwar {re location of Helwan Observatory & Mt. Wilson & Palomar}; S. L. Malurkar; A. Marechal; A. Marlow; Thomas A. Matthews; Aden B. Meinel {c.ltr WABaum to ABM}; Donald H. Menzel {incl c.ltr ANNesmeyanov to DHM; c.tlgm JPBardin to DHM; c.tlgm DHM to ANNesmeyanov; c.ltr DHM to K.Kordylewski}]
Bowen