2019-05-202019-05-201946-04-12https://repository.tcu.edu/handle/116099117/25701Letter from Sgt. Eldon D. Blanton to Clement Ehret, director of market research for International Business Machines Corporation, regarding use of business machines in statistical work for the Army Air Forces.8x10.5 paperPrior written permission from TCU Special Collections required to use any document or photographAviationUnited States Air ForceUnited States ArmyDocument