Booklet and stenciled Hollerith cards are in original cloth case. Case is missing one end panel. Booklet (14 pages) has the following sections: The Method of Exclusion; Use of the Stencils; Large or Negative Values of a; Construction of the Stencils. No marks in very lightly read booklet. Front softcover sunning. The stencils are made on 275 Hollerith cards (7 3/8 inches x 3 3/4 inches). All, save one, is labelled � Exclusion Modulus, Quadratic Character of m, Value of a/m, Stencils for Solving [formula], by R.M Robinson. One card has no label. First card is gift-inscribed � To Derrick H. and Emma Lehmer with the compliments of the � � author� � [and signed] Raphael M. Robinson� . The Lehmer� s, both famous mathematicians, were in the center of research into early electronic computing (including ENIAC). No DJ.

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Bibliographic Details

Title: Stencils for Solving. (mod m)
Publisher: University of California Press
Publication Date: 1940
Condition: Very Good

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Orca Knowledge Systems Inc.
2 Prestwick Ct., Novato, CA, 94949, U.S.A.

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