Anthony Thompson <thompson@...>
The roller bearing was indeed not really applied to railroadI forgot to mention that by the 1928 Cyclopedia, there were passenger roller bearing trucks shown (for PRR and SP) but at that time, no freight trucks with such bearings.
Tony Thompson Editor, Signature Press, Berkeley, CA
2906 Forest Ave., Berkeley, CA 94705 www.signaturepress.com
(510) 540-6538; fax, (510) 540-1937; e-mail, email@example.com
Publishers of books on railroad history