Halliday, Caroline M. The Trail guide to prodigy : a rapid-reading reference to using and cruising the prodigy online service / Caroline M. Halliday. - Reading, Mass. : Addison-Wesley, 1995. - 239 p. : ill. ; 21 cm. ISBN: 0201409720 RM34.78 Subjects--Topical Terms: Prodigy (Videotex system).