On Apr 29, 2007, at 6:46 AM, Park Varieties wrote:

Athearn produced a metal pulpwood car during the mid 1950's. Produced
in one road name only - Kansas City Southern in only one documented
car number - 24010. All- metal car with die cast bulkhead ends.
Originals had sprung metal trucks and dummy knuckle couplers. Catalog
number was A-607.
Frank Brua

Frank,
The prototype cars for this model were built 3-38 by AC&F (lot 1787).
There were two series, KCS 24000-24019 and L&A 3001-3255.
Regards,
Ed Hawkins