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Title: Linus Pauling’s crystallography group
Format: photograph: negative
Series: Academic Divisions
Description: Photo was taken in Crellin. They are using IBM equipment and cards to perform crystallographic calculations.

Title: Robert A. Millikan
Format: photograph: print

Title: Aerial view of the campus
Format: photograph: negative
Series: Campus and Student Life
Description: Campus Aerial Views.

Title: Norman Horowitz and Marguerite Fling in biology lab
Format: photograph: negative
Series: Academic Divisions
Description: The apparatus, invented by Herschel K. Mitchell, is called a chromatopile and represents a cross between earlier glass column and paper chromatography methods. Biology.

Title: Aerial view of the campus
Format: photograph: negative
Series: Campus and Student Life
Description: Campus Aerial Views.

Title: Jesse Greenstein at Caltech
Format: photograph: negative
Series: Academic Divisions

Title: Ian Campbell
Format: photograph: print
Series: Academic Divisions
Description: Campbell, petrologist, served as executive officer for the Division of Geological and Planetary Sciences for several years in the 1940s and 1950s, in addition to being Acting Chairman in 1951-1952. Campbell left Caltech in 1959 to become California ’s State Geologist.

Title: Aerial view of the campus looking NE toward the San Gabriel and San Bernardino mountains
Format: photograph: negative
Series: Campus and Student Life
Description: Campus Aerial Views.

Title: Slide rule
Format: photograph: print
Description: Keuffel and Esser Mannheim-type slide rule. Housed in leather case and cardboard box.

Title: Wing-section model for GALCIT 10 ft. wind tunnel
Format: photograph: print
Description: Used in GALCIT’s 10 ft. wind tunnel.The model has been drilled out in numerous locations to enable the measurement of airflow at particular points.

Title: Pitot static pressure probe used in GALCIT’s 10-foot wind tunnel
Format: photograph: print

Title: Atomizer-burner, acetylene
Format: photograph: negative
Description: Two identical pieces. Designed for use with Beckman Flame Photometry attachment to the DU spectrophotometer. Hand-written on boxes “Used 1954” and “Used 1956.” Both with original instructions and packing.

Title: Chemistry models, plastic
Format: photograph: negative
Description: Part of alpha helix and a peptide or amide group. Mfg. CIT Instrument Shop.

Title: Potentiometer, type B high precision #2780
Format: photograph: negative
Description: Serial #52904. Mfg: Rubicon Co., Philadelphia, PA.

Title: Military slide rule
Format: photograph: print
Description: American Blueprint Co. military slide rule. Housed in leather case.

Title: Chemistry models, plastic
Format: photograph: negative
Description: Part of alpha helix and a peptide or amide group. Mfg. CIT Instrument Shop.

Title: Cosmic Ray Measuring Device
Format: photograph: negative
Description: Includes ion chamber and antenna (see ST-CR-13.2). Shop-made. 17″ tall, 11″ diameter.

Title: Box, hand-made, grey-printed, wooden
Format: photograph: negative
Description: Probably an attachment for the DU spectrophotometer, possibly a hydrogen lamp unit. Given with the spectrophotometer, but so far unidentified. Housing is probably shop-made at CIT.

Title: Hydrogen lamp power supply, Model B
Format: photograph: negative
Description: Serial no. 40079. Part of ultraviolet accessory kit for DU spectrophotometer. Mfg. Beckman Instruments, South Pasadena, CA.

Title: Automobile model for GALCIT 10 ft. wind tunnel
Format: photograph: print
Description: The model has been drilled out in numerous locations to enable the measurement of airflow at particular points. Measures approx. 23″ x 7.5″ x 6″.

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