The first car is a Treadwell 125 ton bottle car. Although heavily abused during its years in service and missing several key components, the car was the first bottle car to be preserved in a US rail museum. This car is of the same design as the two cars in the care of the Mahoning Valley Railroad Heritage Association, however it retains its original Pilcher trucks.
The second car is a Treadwell double pot slag car. This is he only one of its type known to be preserved and it sits behind the museum in a string of unrestored equipment. Hopefully room can be found for this car next to the botle car someday.