Scott,
I'm not 100% sure of this, but I believe the Monon had a second burro crane, which was #106. Attached is the only photo I have of it and if you zoom in on it, you can see the BC 106 in very faint lettering. The caption I have for this photo is :
Cloverdale, IN; May 6, 1975; Ron Stuckey photo, J W Smith collection.
Based on the date, it's possible this may have been an L&N crane. There is no lettering visible.
George L.