Calculating Instruments and Machines, 1949 first edition.
Univ Illinois Press, Urbana, 1949; first edition;.
Univ Illinois Press, Urbana, 1949; first edition;.
Univ of Illinois Press, 1949, second printing 1953; 138 pages, diagrams, photographs.
Report No. 175, Dept. of Computer Science, University of Illinois, Urbana, Ill., April 22, 1965; 19 pages, illus., references.
Report No. 188, Dept. of Computer Science, University of Illinois, Urbana, Ill. September 7, 1965; 47 pages, illustrations, references.
M.S. Thesis, Report No. 197, Dept. of Computer Science, University of Illinois, Urbana, Ill., Feb. 15, 1966; 66 pages, illus., bibliography.
Report No. 184, Dept. of Computer Science, University of Illinois, Urbana, Ill.,June 15, 1965; 44 pages, illustrations, references.