Redore,
You’re referring the pic from the DPL Western History Collection of D-12, the Rio Grande B-E that I posted to start the thread?
If so, I was wondering if it was a different model to the 15-B I built from the Sheepscot kit, as I noted there were a few differences. I presume the 22-B was slightly higher capacity crane? The extra attachments you mention would make sense on a RR as handy to have, but this is the only pic of D-12 I could locate.
I did number my model as D-13, just in order to CYA with the prototype police…[:D]