If you locate a PDF scan of the original Howard W. Sams & Co. edition (circa 1987), here is what you will find inside:
Computer science historians studying the evolution of AI languages find Townsend’s work valuable because it represents the commercialization of logic programming. It shows how Prolog escaped the lab to run on cheap hardware. INTRODUCTION TO TURBO PROLOG BY CARL TOWNSEND PDF
Hobbyists restoring DOS-era machines (486s, Pentium 1s) often run actual Borland Turbo Prolog 2.0. They need the original manual. The Townsend PDF serves as the missing manual for discarded floppies found at garage sales. If you locate a PDF scan of the original Howard W