Classic Freight Cars Vol. 3 is on 40 ft. reefers. There are several great shots of Swift reefers at the Sioux City Iowa plant taken in 54. Most cars are red, but there still are yellow cars around. Most cars appear to be wood rather than steel. I see no composite cars. Also GATX must have had a big presence in the packing industry. You will need GATX tank cars too, plus and assortment of regular box cars for incoming supplies, and older cars for tankage and hides.
General American operated the Swift reefer fleet and sometimes supplemented it with GARX cars. Siwft also had tank cars for rendered fat which GATC operated under SWTX reporting marks.
