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Title: Spectrohelioscope
Format: photograph: print
Date: 1928
Description: Schematic drawing of complete spectrohelioscope setup with observer, with detail inserts showing eyepiece and optical train. Ink drawing printed on card stock, 4.25 x 3.25 inches, signed R. W. P. and dated 1928. This version published in Amateur Telescope Making, Book 1, p. 193. Porter Papers.

Title: 1st World Youth Peace Congress, Errde, The Netherlands
Format: photograph: print
Date: 1928
Description: Kenneth Robinson ’27 was the president of the Congress. Caltech Y Papers.

Title: Franco Rasetti
Format: photograph: negative
Date: 1928
Description: Photo was taken in Ensenada at Thanksgiving. Robert Millikan Papers.

Title: Subukia (Africa) fissure near Maj. Boyce’s farm
Format: photograph: print
Date: 1928

Title: Chem Club
Format: photograph: print
Date: 1928
Description: Emory Ellis Papers.

Title: Gnome hazing
Format: photograph: print
Date: 1928
Series: Throop University

Title: Gnome beach party at Balboa
Format: photograph: print
Date: 1928
Series: Throop University

Title: Gnome “Casino” night
Format: photograph: negative
Date: 1928
Series: Throop University