Looking at steel boxcars through 1950, standard cars are well represented in plastic:
- USRA Design (NYC)(20,000ish) - Broadway Limited
- 1923 ARA (X29/M-26)(66,125) - Red Caboose (now Intermountain)
- 1932 ARA (11,854) - Atlas
- 1937 AAR (60,077) - Intermountain/Red Caboose
- Modified 1937 AAR (41,094) - Intermountain
- Postwar 1937 AAR (34,065)- Branchline (now Atlas), Intermountain for 10'0" IH cars
- PS-1 (46,271) - Intermountain/Kadee
In addition, a number of numerous cars, often of single roads, are also readily available:
- CP Minibox (7,000ish) - True Line Trains
- PRR X31 (14,000ish) - Bowser
- MILW Rib Side (15,000ish) - Exactrail/Intermountain/Rib Side Cars (now Accurail)
- B&O Wagontop (5,000ish) - Exactrail/Fox Valley
That accounts for about 320,500 of the 769,711 cars that the roads receiving standard cars had, or only about 40% of the boxcars that those roads owned. It also doesn't account for the roads that didn't receive standard cars, but it does tell us that the available plastic models only cover a portion of what is needed. It's not clear whether his numbers include Canadian cars.
So what comprises the other 60% of boxcars circa 1950? More to come.