Mr. Hendrickson: Thank you for the SAL JPEGs. I still have one question about the B3s. I have a Jpeg photo sent to me by someone,whose name escapes me now, that shows a B3. It appears to be numbered in the 13000 series but you can clearly see the class notation B3 to the far right of the wooden door. I know B3s were numbered in the 12000-12999 range. The B end also appears to be flat with no corrugations. Any ideas?
Sounds to me like a simple case of mis-stenciling a B-4. I've found any number of similar instances in my photo collection, especially in later years when pride of workmanship went down the drain on the RRs (and everywhere else).