Daily: 10 A.M.–5 P.M.
Closed on Tuesdays
1151 Oxford Road
San Marino, CA 91108
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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
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Additional Formats
[L. N. Mavridis; Nicholas U. Mayall {c.ltr BHRule to NUM}; Theodore G. Mehlin; Donald H. Menzel {incl c.ltr DHM to LGoldberg}; Mark Merritt; Joseph S. Miller; William C. Miller; K. E. Mills; Orren C. Mohler; Mrs. Katharine B. Moore; W. W. Morgan; T. M. Morse; Guido Münch; Luis Münch; P. T. Murphy]
Bowen
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Additional Formats
[John E. McCarthy; Andrew McKellar; Dean B. McLaughlin; D. H. McNamara; Paolo Maffei; Antonio J. Saldías Maninat {crank}; Hafiz Muhammad Ayub Marwat; Max Mason; N. U. Mayall {incl c.ltr NUM & JNeyman to JHOort}; Anthony J. Meadows {incl ltr GCMcVittie to ISB; ltr ISB to GCMcVittie}]
Bowen
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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
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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
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Additional Formats
[Donald J. Mary; Sister Mary Therese, BVM; Clifford Mattison; Nicholas U. Mayall; Hester Meech {re Gingrich's death}; C. E. Kenneth Mees; William F. Meggers {incl 1 reprint}; Aden B. Meinel; William V. Mendenhall; Donald H. Menzel {incl 1 ltr SBNicholson to DHM}; Paul W. Merrill; Gerald Merton; S. N. Milford]
Bowen