The Pentrex Railroad VHS set includes three different videos that cover a wide range of topics related to trains and transportation. "Big Trains Rolling" showcases the excitement and power of large trains on the tracks, while "Mainline USA" explores the various routes and destinations served by trains in the United States. "Wheels Of Progress" highlights the technological advancements and innovations that have shaped the railroad industry over the years. This set is a must-have for collectors and enthusiasts of all things trains.