Murray, Francis J., The Theory of Mathematical Machines, New York: King’s Crown Press, 1947, 116 pp.

The author states that a mathematical machine is a mechanism that provides information concerning the relationships among a specified set of mathematical concepts.

Turck, J. A. V., The Origin of Modern Calculating Machines, Chicago: Western Society of Engineers, 1921.

Recently, however, some magazine and newspaper publishers have seen news value in machines that think, and some good general articles with appeal to a wide audience have appeared. For the references to these articles, see the section of this supplement entitled “Digital Machines—Miscellaneous.”


PUNCH-CARD CALCULATING MACHINES

There are a few general references on punch-card calculating machines:


Baehne, G. Walter, editor, and others, Practical Applications of the Punched Card Method in Colleges and Universities, New York: Columbia University Press, 1935, 442 pp.

This is a collection of many contributions from a number of authors, describing various applications, chiefly educational.