This Congressional Report contains a letter dated January 16, 1888, by Indian Commissioner J. D. C. Atkins who was asked to inventory and identify for Congress the Mission Indians living in California. Senate Report No. 74, 50th Congress, 1st. Session. The letter reported that the Mission Indians are members of four distinct tribes: Serrano, Dieguence (doe gain yos), Coahuilas (co we ha) and San Luis Rey (or San Luisenos). The Commissioner went onto identify 42 specific villages of Mission Indians and their tribal names today are products of those places, (such as Agua Caliente, Cabazon, Temecula, Rincon, etc. The investigative work, which led to this report for the Congressional inquiry, was “detailed and specific”.