Here are two American Flyer S gauge cabooses I purchased from a fellow in Michigan by the name of Richard Schneider. Rich does excellent work. I put Marx 3/16 trucks on the South Shore Caboose and will do the same for the EJ&E. The picture with the Marx stock car is for size comparison. Hard to find CSSB and EJ&E cabooses in O or Marx 3/16.
Here is a picture of a South Shore Little Joe that Rich made from two Marx number 21 tin/sheet metal shells. He also made his own e unit for this, Rich has some great skills.
Sure would like to see others CSSB & EJ&E.
Dean