I've got a current personal project of trying to play every Star Trek game (although for versions of the Mike Mayfield game, I stuck to significantly different versions that used the name "Star Trek", there are lots of almost identical versions).
Visual Star Trek is my favourite version about it. It really is strange how there's no information about it, where it came from or who made it. It's a complete mystery - yet the actual code from both (very different) 1971 BASIC Star Trek games (the other one is by Bill Peterson) is preserved.