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55. R.C.A., distribution of workers

Maps Public content
1950. Blue line print.; Shows numbers of R.C.A. Bloomington employees by home cities and towns with graduated circles.; Includes graphs. Scale approximat...

57. Sandwich quadrangle, Illinois : 15 minute series (topographic)

Maps University Of Illinois Urbana Champaign Public content
1950. Geological Survey (U.S.). Contour interval 10 feet.;"Culture and drainage in part compiled from aerial photographs taken 1939. Topography by plane-table methods 1948";Relief... Geological Survey (U.S.) and Geological Survey Division (Urbana, Ill.).

58. Sarkes Tarzian, distribution of workers

Maps Public content
1950. Blue line print. Shows numbers of Sarkes Tarzian employees by home cities and towns with graduated circles. Includes graphs. Scale approximately 1:...