The Etiwanda High School Library Supporters were founded in 2013 following the discovery of the library having been built on an ancient Native American burial ground. It was considered as a holy place, and in need of preservation. The Etiwanda High School Library Supporters came together for this purpose—preserving not only the land, but all of the knowledge contained within the library as many Native American writings were left behind in the library and are now available for reading and learning from. The initial details regarding the land being an ancient burial ground were lost for many years, and it wasn’t until the high school, and more specifically the library itself, were being built that the documents, books, and various writings from lifetime’s long ago were discovered, and the need for preserving this land and its contents became a necessity. The supporters even host annual events aimed towards bringing awareness to the land, the history, and the library.