Found an old Bluffer's Guide to Fandom

[feng_shui_house]

I've never attended Media-west convention, but a correspondence friend (back in the day when I wrote actual letters and mailed them) did, and she sent me a much-mimeoed 'cheat sheet' on the then currently likely to be discussed fandoms. If you have the energy to check when the most recent of these shows ran you'd know how old it is. After 1990, anyway. I'm sorry some of the symbols are impossible difficult to discern. I did my best, but they weren't clear in the pages I scanned.