The #1070 was part of a order of Class L-9 0-6-0's the Northern Pacific ordered from Alco. Coincidentally, it shares the same number as a loaned S-1 diesel, another ALCO product.
Around 1925, 1070 was moved to the Tacoma Division. In May, 1950, #1070 was converted from burning coal to burning oil.
It ended its career with the Northern Pacific in 1958 at McCleary, as the last steam locomotive retired from active service. Around March the same year, the engine was leased by the NP to The Simpson Lumber Co. in McCleary, WA and then was sold to them around May, 1958. The locomotive was seen pulling lumber cars at the plant in 1959. 1070 was also seen pushing a bunk car and a log loader to carry some logs deeper into the tall timbers of northwest Washington state.
It was moved to The Puget Sound Railway Historical Association (P.S.R.H.A) in Snoqualmie, WA and stored there until 1972 when they bought a ex-NP branch line from the Burlington Northern that they renamed to The Lake Whatcom Railway.
In 1988, the locomotive ventured briefly on Burlington Northern trackage, carrying oil tankers.</span> In April 1988, Burlington Northern Railway had a track washout south of Wickersham, WA due to flooding. They hired 1070 to haul their cars back to Acme, WA.
The locomotive is based at the Lake Whatcom Railway where it worked hauling passenger excursions and occasional freight trains.
Today the NP #1070 is still at Lake Whatcom Railway but has been out of service for some time due to needed boiler work.
- This is the only operable steam locomotive on the Lake Whatcom Railway.
- This locomotive featured in the film "The Grey Fox", "Trainsongs", and its wheels make a brief appearance in "Hard Hat Harry: Trains".
- It was because of #1070, that Burlington Northern, ended there steam ban.