Andries "Andy" van Dam (born December 8, 1938) is a Dutch-American professor of computer science and former vice-president for research at Brown University in Providence, Rhode Island. Together with Ted Nelson he contributed to the first hypertext system, Hypertext Editing System (HES) in the late 1960s. He co-authored Computer Graphics: Principles and Practice along with J.D. Foley, S.K. Feiner, and John Hughes. He also co-founded the precursor of today's ACM SIGGRAPH conference. Van Dam serves on several technical boards and committees. He teaches an introductory course in computer science and courses in computer graphics at Brown University. Van Dam received his B.S. degree with Honors in Engineering Sciences from Swarthmore College in 1960 and his M.S. and Ph.D. from the University of Pennsylvania in 1963 and 1966, respectively. Source: Wikipedia (en)