On-line and print sources indicate that #4084C was re-numbered in 1972 to C&NW 415 and placed in passenger serivce. Subsequently there are follow-up questions that perhaps you can help answer.

• What year was the heavily damaged 4084C repaired?
• Was the work done by C&NW shop forces, which most likely had the capability?
• Was the the two-year-old locomotive retuned instead to EMD for repairs?
• Would a bent or cracked frame typically necessitate a replacement locomotive with the re-use of the existing builder number?