Purchased in 1917, #102 was an ex-Northern Pacific (NP) 4-6-0, most likely from the S class. The NP 4-6-0s were some of the last locomotives to operate on the Northern Pacific. Light-weight, they worked many branch lines on railways that newer locomotive power could not. They were mainly used as passenger engines before being replaced by the 4-6-2 engines. The #102 was also destroyed in the 1930 fire at the Roundhouse. Be sure to view the #105 nearby.