An Error-Sampled Sweep-Position Control System. - C. H. Knapp; E. Shapiro; Robert A. Thorpe (IBM J. Res. Dev., 1958)

Image processing hardware for a man-machine graphical communication system. - Barrett Hargreaves; John D. Joyce; George L. Cole; Ernest D. Foss; Richard G. Gray; Elmer M. Sharp; Robert J. Sippel; Thomas M. Spellman; Robert A. Thorpe (AFIPS Fall Joint Computing Conference (1), 1964)