I was hoping that the "DS Fest Memory Book 1983-1993" would have some detailed info about Dallas, but, unfortunately, when I got the chance to dig it out today, there was precious little (the book frequently mentions attendance figures and gives a rundown of many of the other covered Fest events). In fact, only the '86 Fest is covered - there's no mention of anything in Dallas in '84 or '85, despite the book covering a non-Fest event like San Jose's Timecon85, which Frid attended. But as we know things can get quite political with these events, so that may be what was behind the omission of other Dallas events.
But for what it's worth, here are some worthwhile things I can share:
And I've also attached some newspaper items that were included in the book.
Enjoy!