Try the Railcar Association.
Go to 'Links' top of page, right of centre, then to 'Prototype' and the link is on page 3 thereof.
Hope it's of use to you,
Regards,
John Webb
Go to 'Links' top of page, right of centre, then to 'Prototype' and the link is on page 3 thereof.
Hope it's of use to you,
Regards,
John Webb