Tony Thompson

Thanks for the insite. By 1928 the standard AAR auto-boxes had changed the clearance envelop and auto-boxes were starting to get bigger . . . but the smaller ones would still be around.
You mean, of course, the ARA, since the AAR came along in 1934; and there really wasn't a "standard" ARA automobile car that I know of. The AAR adopted such a standard in 1942.

Tony Thompson Editor, Signature Press, Berkeley, CA
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