Tim,
Thanks for your reply. I still find it interesting that all pictures of the other L-1's I've seen, even from the early to mid 1920's (less than 10 years after being built), don't have the original style numbers nor do they retain the as-built bell and generator placement. Only this particular locomotive seems to have escaped these changes for upwards of 20?/25? years after being built. There's got to be a story in there somewhere, even if the story may be that perhaps this one was a bit of a lemon. Does the Society have any of the Monon's records for steam locomotive repair/rebuild?
And to answer Mr. Butcher's question:
Class 2 repairs would generally include: New Firebox, new flue sheets- front and back, new tubes and flues, any necessary heavy mechanical repairs and the wheels turned with new tires. Major stuff.
A big thank you to Mr. Dolzall for your information as well. I really appreciate you're willingness to share information from records that you've gotten your hands on over the years.
Eric Reinert