A convention held twice in the Champaign-Urbana, IL area beginning in 1979. It was probably sponsored by ChUSFA.

In 1985, a group of former Champaign fans planned to run a third Whatcon in the southwest suburbs of Chicago, but cancelled it due to problems with the hotel, the William Tell "No Tell" Motel. Dick Smith, who was to have been the Fan Guest of Honor, printed the postcards informing members of the cancellation.

Convention Dates GoHs Notes
Whatcon I June 8-10, 1979
Whatcon II 1980
Whatcon III 1985 Dick Smith cancelled

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