Hmmm. An A Class 2-6-6-4, No. 1238, poses for its official portrait at Roanoke. It was one of only five articulated steam locomotives built in the U.S. with roller bearing rods. Norfolk & Western photo

 That's a lot of engine I've never seen before

https://www.trains.com/ctr/railroads/fallen-flags/remembering-norfolk-western-railway-locomotives/