The book also gives a deeper look into how different industries use freight cars, when cars entered service, and the dates when rules and restrictions took place.
Other topics include:
Freight car evolution (size and weight increases; new car types)
Car components (brake systems, trucks, and couplers)
Hi-cube and specialty boxcars
Intermodal cars (flat, spine, and well cars)
Open and enclosed auto racks
Mechanical and cryogenic refrigerator cars
Center-beam flatcars
And much more!