Abstract Esther H. Klotz was a lifelong Riverside County resident, who was very involved in local historical preservation efforts and in researching and writing about Riverside and the surrounding area. The Esther H. Klotz papers contain research notes, correspondence, publications, and other material pertaining to the city and county of Riverside as well as to the local history and development of various other cities in Southern California. This notably includes research related to her co-authored...