Regarding 375, per Jimmy's postings:
On March 1st, 375 double-headed with 463 on the train to Silverton.
On March 2nd, 375 again double-headed with 463 on the train to Silverton, but on the way back to Durango it derailed south of Tacoma, and did not get back to Durango until the following day.
It then worked as the Durango switcher on March 18th and from March 21st thru April 15th.
It has not been seen since.
DRGW records show a scrap date of 6/21/49. Don't know if that was the start date of scrapping or the completion date.