Look for Borland Pascal Developers Guide, written by Ed Mitchell and Published by QUE Books. I think is the best book about TV and Turbo Pascal 7.0 you can find in the market. It comes with a companion disk including source code and utilities like a string resource compiler and a programmers editor, among others.I've seen other users recommend this book too, although I've not read it myself.
Borland Pascal / Turbo Pascal 7.0 Turbo Vision
DOS-Programmierung mit der Objekt-Bibliothek
by Otto Fischer
739 pages, diskette included, 69 DM
Tewi Verlag
Riesstr. 25, Haus D
D-80992 Munich
Germany
ISBN 3-89362-287-X
Herewith the names of 2 books that I found helpful. The first is more directly applicable to TV.