{incl "Full-Tone Collotype for Scientific Reproduction," Supplements 6-13; reprint of "Photographic Studies of Nebulae," by John Charles Duncan w/ samples of photo collotype}
{incl c.ltr ? Edwin P. Hubble ? J. C. Merriam; copies ms. "The Observational Approach to Cosmology," (Nov. 1936) based on EPH Oxford lectures; ltr EPH ? FHS w/ copies of ms. of EPH's 3 Oxford lectures (see above); ltr FHS ? EPH}
{R. A. Millikan; Monroe Calculating Machine Co. [folded. incl Calculator Equipment Corp.]; Montevideo, Observatory of the University of [folded]; Monthly Weather Review; Joseph Monti; K. Moór [?]; Ernest C. Moore; Morava Construction Co.; D. W. Morehouse [incl ltr H. Shapley ? DWM]; D. P. Moreton; G. W. Morey; --Moriceau; T. H. Morgan; Sylvanus G. Morley; W. D. Morrison; Albert G. Mowbray [incl memo EPH ? FHS]; F. R. Moulton; Z. Müller; Carlos S. Mundt}
