(Did you mean Dutch or a Bay Area convention?)

X-Con was a convention held in Milwaukee, WI from 1977 to 1984

Convention Dates GoHs
X-Con 1 June 17-19, 1977 Gordon R. Dickson, Bob Asprin
X-Con 2 June 2-4, 1978 Anne McCaffrey, Marty Coady
X-Con 79 July 6-8, 1979 Ben Bova, Doug Price
X-Con 4 June 6-8, 1980 Katherine Kurtz, E. Michael Blake
X-Con 5 June 12-14, 1981 L. Sprague de Camp, Catherine Crook de Camp
X-Con 6 May 21-23, 1982 Marion Zimmer Bradley, George Price
X-Con 7 June 10-12, 1983 Poul Anderson, David Egge
X-Con 8 June 8-10, 1984 (at Olympia Resort and Spa in Oconomowoc, WI)
Wikipedia Fanac File770 Ansible
Concatenation Fanlore Files https://duckduckgo.com/?t=lm&ia=web&q={$name} (IA) Website . 1977 1984

This is a convention page. Please extend it by adding information about the convention, including dates, GoHs, convention chairman, location, sponsoring organization, external links to convention pages, awards given, the program, notable events, anecdotes, pictures, scans of publications, pictures of T-shirts, con reports, etc.