Are any of the participants in the forum aware of any examples of the Bethlehem Auxiliary Locomotive (a booster) that exist on preserved equipment, either the four wheel or six wheel version? Thanks in advance for your help.

Perhaps one of the "big" LS&I 2-8-0s at IRM? The OHCR 33 had one (tender truck booster) originally, and it was removed at Hocking Valley, I recall.

How about the remaining Union RR-DM&IR 0-10-2 (now on display at Greenville, PA on the B&LE)? They were built with the tender boosters; does this one still have it?