The loco is an original Lionel that was converted to outside 3rd rail a long time ago. When I bought it it was all apart and the paint was chipped and was very dark from a very thick coat of shellac. The conversion was done with a purpose built chassis with very detailed rods and valve gear. The only Lionel parts that were used are the boiler and tender bodies, everything else was replaced. I put a center rail pickup on the loco and tender. It runs quite well on 072 Fastrack. There is also a pretty well detailed cab interior. I am assuming that this was done with a conversion kit that was available in the 1940s. If anyone has any information on this please let me know.
The passenger cars are original 1930s Walthers built kits that I had collected over the years. They were all in horrible shape. Most of them had scratch built interiors in them. I added interiors to the cars that did not have anything inside. I restored them a few years ago and put K-line trucks on them.