High Quality Content by WIKIPEDIA articles! Andries "Andy" van Dam (born 8 December 1938, Groningen) is a Dutch-born 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, 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.