Since I'm pretty limited for space, I've narrowed it down to Knott's, Disneyland, and Six Flags over Texas for the December issue, and Cedar Point, Silverwood, Disneyworld, Silver Dollar City, and Dollywood/Tweetsie for the Jan. issue. I did not consider including the Huckleberry, the Agrirama, Greenfield Village, or others like them because they not railroads that operate in "theme parks" per say. Besides, I simply don't have the space. As far as I know there has never been much written on Cedar Point or Six Flags over Texas. Knott's was written up in the May 1994 (I think) issue of Railfan and Disneyland, of course, is well covered in Broggie's excellent book. I have never seen much on Silverwood and there are few that know about Silver Dollar City's (Branson, MO) 2-foot gauge train. Dollywood and Tweetsie have both been covered in the pages of Railfan.
Jeff Terry