Re: SV coach identity/White Pass

This might not be what you wanted but hopefully it is of some interest.
SV coaches 10,25, and 26 wound up on the White Pass & Yukon Route where they were converted to parlor cars and then in the late 1990's back to coaches. Following White Pass practice they were named as follows: 10-Lake Portage, 25-Lake Schwatka, and 26-Lake Lewes.
Number 10 had been combine 209 but was converted.
SV combine 11 is now White Pass 211 and has been or was fitted with a cupola for mixed train service.
Baggage car number 5 became White Pass X-3 and was used in work service for many years. 25 and 26 were used as bunk cars until being reconverted to coaches in 1963.
2-8-2's 19 & 20 were also sent to the White Pass. 20 became White Pass 80 and 19 became White Pass 81. They were returned to the present day Sumpter Valley operation in 1977 and the 19 is now in operation.
Sumpter Valley Cabooses 3 and 4 were sent north in 1943. #3 burned in 1945. It was numbered USA 909. #4 was numbered as the 1st 911 and has been returned to the SV, sometime in the 1980's.
Ten SV wood flats went to the White Pass. They were numbered 317-326 by the White Pass. They were in the 76000 series on the SV and went north in 1942.
Hope this was of help.