Consists of:
A strong infrared radiation from molecular nitrogen in the night sky. Joel Stebbins, A. E. Whitford, P. Swings.(3 leaves/pieces)
Universities Committee on Post-War International Problems: Tentative List of Problems (2 leaves/pieces)
Universities Committee on Post-War International Problems: Problem I (3 leaves/pieces)
Consists of:
Notes on photographic emulsions. Paul W. Merrill (1 leaf/piece)
Photography. Anonymous (9 leaves/pieces)
Photography at the Mount Wilson Observatory. Anonymous (2 leaves/pieces)
Progress in stellar spectroscopy. Anonymous (14 leaves/pieces)
Spectroheliograms. Anonymous (2 leaves/pieces)
Studies of cosmic rays. Thomas H. Johnson (7 leaves/pieces)
Sunspots associated with magnetic storms. Anonymous (5 leaves/pieces)
Threshold photography. Anonymous (3 leaves/pieces)
Consists of:
Copernicus 1473-1543. Walter S. Adams (2 leaves/pieces)
Copernicus (Speech). Walter S. Adams (5 leaves/pieces)
Hale. Walter S. Adams (4 leaves/pieces)
Interstellar lines in the brighter stars of the Pleiades. Walter S. Adams (3 leaves/pieces)