Northern Pacific interlocking tower at Tacoma, Washington, on October 22, 1967. Reservation tower, train order signal. Photo by J.M. Fredrickson . Other Subject Classes: interlocking tower, train order signal

Northern Pacific interlocking tower at Tacoma, Washington, on October 22, 1967. Reservation tower, train order signal, northbound freight train with run-through Southern Pacific power approaching in distance. Photo by J.M. Fredrickson . Other Subject Classes: interlocking tower, train order signal, freight train

Northern Pacific interlocking tower operator Carl Millmott at Tacoma, Washington, on October 22, 1967. Operating lever at Reservation tower. Photo by J.M. Fredrickson . Other Subject Classes: railroad employee, interlocking tower

Northern Pacific interlocking tower at Tacoma, Washington, in 1944. Brick control tower at 15th Street and Pacific Avenue. Photo by J.M. Fredrickson . Other Subject Classes: interlocking tower

Northern Pacific interlocking tower at Tacoma, Washington, circa 1943. Levers inside tower to control switches. Photo by J.M. Fredrickson . Other Subject Classes: interlocking tower, switch equipment

Northern Pacific Beneficial Association Hospital at Tacoma, Washington, in 1957. Chief surgeon's residence. J.M. Fredrickson collection. Other Subject Classes: hospital, house

Northern Pacific Beneficial Association Hospital at Tacoma, Washington, in 1923. Kitchen. J.M. Fredrickson collection. Other Subject Classes: hospital

Northern Pacific Beneficial Association Hospital at Tacoma, Washington, in 1921. Lobby. J.M. Fredrickson collection. Other Subject Classes: hospital

Northern Pacific Beneficial Association Hospital at Tacoma, Washington, in 1921. Front of building, grounds, nurses' home. J.M. Fredrickson collection. Other Subject Classes: hospital

Northern Pacific Beneficial Association Hospital at Tacoma, Washington, in 1921. Private Room, with bed, sparse furnishing. J.M. Fredrickson collection. Other Subject Classes: hospital