From the record
“The Glen and Addie Crabtree Cabin was built in 1928. The house near Island Park, Idaho was listed on the National Register of Historic Places in 2000.”
Wikipedia article Glen and Addie Crabtree Cabin, CC BY-SA 4.0.
One of 14 National Register listings published here for Fremont County · listed in 2000 · category: Building · built in 1928, rustic architecture.
Sources: the Wikipedia article · the case file at the National Archives · the National Register database, National Park Service