From the record
“Ah Toy Garden is a garden located within Payette National Forest in Warren, Idaho, United States. The garden was established by the Chinese American community in order to grow fruits and vegetables to maintain a traditional Chinese diet while Chinese immigrant laborers worked in the mines.”
Wikipedia article Ah Toy Garden, CC BY-SA 4.0.
One of 42 National Register listings published here for Idaho County · listed in 1990 · category: Site.
Sources: the Wikipedia article · the case file at the National Archives · the National Register database, National Park Service