Issue No. 12 - December (1978 vol. 11)
N. Rochester , IBM Corporation and MIT
A keyboard prototype offers one-handed operation, small size, low cost of manufacture, and permits the touch typing of large alphabets.
F.C. Bequaert, E.M. Sharp, N. Rochester, "The Chord Keyboard", Computer, vol. 11, no. , pp. 57-63, December 1978, doi:10.1109/C-M.1978.218024