Glad I found the site again. After it was moved from acmecity I couldn't find it even in searches, and tryinmg various domain name combinations. (I thought I would have tried "velmadinkley.com", but apparently got tired and gave up before that. I liked the site so much because it had so much information on the voices. (There's a discussion going on now at Toonzone forum on Velma's
voice). 

Well I guess you haven't heard the big news-- There's a rumor going around (supposedly from insiders) that the next Scooby animated movie will being back not only Heather North, but also NICOLE JAFFE.  I sure hope it's true, as Velma has never been the same. This to me would be the best thing to haoppen to Scooby in the last 30 years, nearly. The movie (Vampire Island) is for real, as trailers for it already appeared on the new Scooby Meets Batman DVD. Also, the original style animation and remakes of the music pieces. Another movie is to follow. Too bad the new series wasn't done like this.
I also felt Kellie Martin, who did Daphne on A Pup Named Scooby would have been a good Velma. Daphne in that series had taken on much of Velma's wit anyway (while Velma hardly spoke at all. This is what I see as one of the flaws of that show)

Also it is not true that Scrappy is the cause of Pat Stevens' departure. The entire first season of Scrappy had the whole gang, and Stevens did most of the episodes. Then towards the end, she left and was replaced by Maria Frumkin (not covered on your page) for four episodes. So there was some other reason Stevens left, because the role was not quite over yet. Then the gang was retired for a
few years, but in 1984 Velma made guest reappearances and it was Frumkin returned. 

Other news, I was a bit disappointed in the Scooby Meets Batman DVD because it did not restore the edited clip of Velma and Batman discussing the dangers of counterfeiting. That was one of her most deepest lines, but was cut out of all of CN/Boom/KWB airings for some reason (It was in the syndicated and USA copies though). Another edit in one of the Don Knotts episodes has Fred take Velma and leave Daphne behind with the others.

Webmaster note-
Mary did play Velma for a short period of time, but there is little info about her available.  We will try to dig some info up. Velma actually left due to some budget and staff reductions as HB tried to squeeze out some additional profit. (bad move for Velma fans!)