From the record
“The Avery Depot in Avery, Idaho was built by the Chicago, Milwaukee and Puget Sound Railway in 1909 as part of its Pacific Extension into the Pacific Northwest from Chicago, Illinois. Avery was the west end of overhead catenary, which allowed electric locomotives to operate instead of steam engines.”
Wikipedia article Avery station, CC BY-SA 4.0.
One of 27 National Register listings published here for Shoshone County · listed in 1984 · category: Building.
Sources: the Wikipedia article · the case file at the National Archives · the National Register database, National Park Service