All over the Internet for anyone who cares to look.
They're on Rivero's site someplace. (I'd supply a link but I get the feeling you wouldn't look anyway, for some strange reason.) Ian Goddard has posted them. Paris Match has published them. Kallstrom et al. call these images (Note the "s." There's more than one, and they move in a time sequence on a collision course with the TWA 800 radar returns.) on ATC radar "anomalies."
ML/NJ
-Index of TWA 800--Archive articles--
Pretty sure there are references to the "30-knot track" in all of that...