Robert S. Brumbaugh

Simple Working Models of Historic Machines. (Easily Made by the Reader.) Aubrey F. Burstall. M.I.T. Press, Cambridge, Mass., 1969. 80 pp., illus. $3.95

Robert S. Brumbaugh, 1969 .

The Voynich 'Roger Bacon' Cipher Manuscript: Deciphered Maps of Stars

Robert S. Brumbaugh, 1976, Journal of the Warburg and Courtauld Institutes.

Ancient Greek Gadgets and Machines

Robert S. Brumbaugh, Jerry Stannard, R. Brumbaugh, 1968 .