{includes notes on "Distribution of Stars in Quadrants," "Microscopes for New Measuring Machines," "Elliptical Polarization of Tower Mirrors," "Orientation of General Magnetic Field Plates," "Photographic Effects in Fath's Observations," & "Precision of Calcium Flocculi Measures"}
{C. E. Adams; Hans Christian Adamson; Agence de Libraire et de Publications; Dinsmore Alter; American Academy of Arts and Sciences; American Astronomical Society [Raymond Smith Dugan]; American Council on Education; American Mathematical Society [Marc H. Ingraham]; American Offset Printers; American Telescope Laboratories, Inc.; Genevieve Arduin; Merle Armitage; Associated Press; Association of Colleges and Universities of the Pacific Southwest [Charles T. Fitts; Ernest J. Jaqua]; J. Attarablas; Audiphone Co.; Automobile Club of Southern California. folded}
{Ibérica; Indian Academy of Sciences [M. N. Saha]; Institut d'Astronomique Pratique, Warsaw, Poland; Institut d'Optique; Institut de Physique du Globe, Paris [Ch. Maurain]; Institute of International Education; International Catalogue of Scientific Literature; International Education Board [re grant for AAVSO]; International Magazine Co.; International Press Service; Irving-Pitt Manufacturing Co.; Dorothea Isaac-Roberts}
{Oberlin College [F. E. Carr; Emma L. Frank]; Sir Frederick O'Connor; J. Ogden; R. M. Ogden; Yngve Öhlman; Eleanor Olney; John Ohlsson; William Tyler Olcott [& G. H. Lutz]; Charles P. Olivier; P. Th. Oosterhoff; Earle L. Ovington}
{Ukrainian SSR Academy of Sciences; USSR Society of Cultural Relations with Foreign Countries [E. Tsubina; I. Korinetz; M. Apletin; E. Leite; M. Milikovsky]; US Civil Service Commission; US Coast and Geodetic Survey; US Customs Service; US Department of Commerce; US Geological Survey; US Naval Observatory; US Shipping Board; US Weather Bureau; Universal Film Manufacturing Co. [M. G. Jonas]; Université Libre de Bruxelles [R. Sedeyn]; University of California at Los Angeles [Frederick C. Leonard]; University of Utah [Junius J. Hayes]; University of Washington Library [W. E. Henry]; Universum Book Export Co., Inc.}
{Fr. R. Cirera, S.J.; Cpt. P. Civalleri, R.I.N.; Civic Bureau of Music and Art of Los Angeles; Claremont Colleges; Nell Ray Clarke; --Clasen; Gerald Coffman}
