SP&S 4-6-6-4 steam locomotive Number 904, Class Z-6, with a freight train at Camas, Washington, undated.
SP&S 4-6-6-4 steam locomotive Number 903, Class Z-6, and an American Locomotive Company (ALCO) FB diesel power at the east end of the Wishram, Washington enginehouse, undated.
SP&S 4-6-6-4 steam locomotive Number 903, Class Z-6, with a westbound freight, undated. Photo by Emery J. Roberts.
Roberts, EmerySP&S 4-6-6-4 steam locomotive Number 903, Class Z-6, with a freight train at Camas, Washington, undated. Photo by Jerry Franklin.
Franklin, J.SP&S 4-6-6-4 steam locomotive Number 903, Class Z-6, leaving Pasco, Washington with Train Number 275, March 21, 1939. This locomotive would later become Great Northern Number 4000. Photo by Al Farrow.
Farrow, AlbertSP&S 4-6-6-4 steam locomotive Number 902, Class Z-6, leaving Pasco, Washington as Extra 902 West, September 2, 1954. Photo by Al Farrow.
Farrow, AlbertSP&S 4-6-6-4 steam locomotive Number 902, Class Z-6, with an eastbound freight departing Vancouver, Washington, September 23, 1952. John Labbe Photograph.
SP&S 4-6-6-4 steam locomotive Number 902, Class Z-6, with a freight train at Hangman Creek, near Spokane, Washingon, undated.
R. Reid CollectionSP&S 4-6-6-4 steam locomotive Number 902, Class Z-6, with the Scribner Turn at the junction near Marshall, Washington on May 17, 1953. Photo by Ron V. Nixon.
Nixon, Ron V.SP&S 4-6-6-4 steam locomotive Number 902, Class Z-6, with the Scribner Turn at Marshall, Washington on May 17, 1953. Photo by Ron V. Nixon.
Nixon, Ron V.