Grant,
SP or SPC 24 may have operated on the C&C line during the tonopah boom. There is a picture of sister car 25 on the C&C during the boom. 24 was sold to the Lake Tahoe and then ended up on the N-C-O during the period the SP was standard gauging that line.
SPCRR has caboose N&C 455 formerly SPC 47. This one of four SPC combine looking cabooses; two of these went to the N&C. The other became CP/SP caboose #1, later #400
Coach 14 went to the Lake Tahoe and it appears that the car, along with others, sat for some years at Truckee after the SP take over of the line.
C&C caboose #2 (looks like a caboose-bagagge-passenger) is owned by Babcock and is in Orange.
C&C caboose #1 body is at Laws.
There were two "tin box cars" at Mina. One was a storage shed at the north end of town; after a fire it was obtained by NSRM. The other was part of a company house in the yard area; a few years ago it was given to Mineral County Historical Society (Hawthorne, Nev.) which in turn gave it to NSRM. This second one is the more intact of the two.
At Keeler: The body of baggage-exp car #4 has been relocated from the old engine terminal to a residencial compound north of town. In town, next to the engine terminal is a "duck-billed" passenger car body; this is said to be a standard gauge car by its width. On the southern most street there is another passenger car body being used as a house; no information about this car.
At Mountgomery Pass the box car body that had been part of the station building was still there in November.
Hope this helps.
Information on the passenger cars of the C&C/N&C/CP/SP on the Keeler line is being covered in a multi-part article in the Jounral of the SPNG Society.
Brian Norden