The June 1994 Mainline Modeler has an article on the ribside version. Railroad owners include CNW, D&H, DRGW, FEC, GBW, GTW, MKT, SP and TP&W.
The July 1994 Mainline Model has an article in the smoothside version. Railroad owners include CNW, D&H, DRGW, GTW, MKT, NYC, SLSF, SP and WP.
Some of these cars were leased so the reporting marks may not have been the railroad's