Texas North Western Railway at Etter, TX

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The Texas North Western Railway interchanges with the BNSF at Etter. The railroad was not operating on the day of my visit, but there was a train conveniently posing for pictures east of town.

Texas North Western Railway at Etter, TX Texas North Western Railway engine 116 at Etter Texas North Western Railway engines 116 and 108 at Etter

Engine 116 is on the point of the train. At one time the unit had a steam generator and an oscillating head light above the regular head light.

Texas North Western Railway engine 108 at Etter, TX

I did an internet search but couldn't find any history on these engines. Anyone know the lineage?