The handwritten description, sketches, and computations for a seeder designed by John V. Atanasoff. The plans are for a seeder that would slip and not break when it becomes clogged.
Letter from John V. Atanasoff to International Resistance Company regarding the stability of resistors, November 14, 1939. The letter details a request for information on variation in the values of resistors as well as the typical life history.
Letter from John V. Atanasoff letter to Harry A. Ehle of the International Resistance Company regarding the purchase of resistors, January 4, 1940. The letter details a request to acquire 600 resistors to be used in the completion of a machine Atanasoff is building.
Letter from John V. Atanasoff to Irgin Stewart of the Committee on Scientific Aids to Learning regarding the mechanization of mathematical equations and a request for grant money, July 10, 1940. The letter details Atanasoff's idea to mechanize linear algebraic equations by designing a machine that will have a large numerical capacity to increase the tabulation speed. The letter also requests grant money to help in the completion of the computing machine.
Letter from John V. Atanasoff letter to Harry A. Ehle of the International Resistance Company regarding the purchase of resistors, February 19, 1940. The letter requests a price quote for the tentative list of resistors that Atanasoff wants to acquire.
Letter from John V. Atanasoff to the Iowa State College Research Council regarding the mechanization of mathematical equations and a request for grant money, March 24, 1939. The letter details Atanasoff's idea to mechanize linear algebraic equations and also requests grant money to help in the building the computing machine.
Letter from John V. Atanasoff to G. D. O'Neill of the Hygrade Sylvania Corporation regarding a paper on vacuum tubes, July 26, 1941. The letter details Atanasoff appreciation for a copy of O'Neill's paper titled The Effects of Contact Potentials on Vacuum Tube Characteristics and it's helpfulness in the construction of the computing machine.
J.V. Atanasoff's report on how a person's physical capacity affects the use of antiaircraft tracking systems and what design changes can be made to address these issues.
