Chino Hills resident Paul R. Spitzzeri will present on the history of the Tres Hermanos Ranch, 7 p.m. Monday, May 6 at the Chino Hills Community Center, 14250 Peyton Drive, sponsored by the Chino Hills Historical Society Tres Hermanos Ranch, at nearly 2,500 acres, is the last large piece of undeveloped land in the region and is now in the hands of a joint powers authority involving the Cities of Chino Hills, Diamond Bar, and Industry.

The history of the nearly pristine property dates to the Spanish and Mexican period, and as ranch land under several owners in the 19th century and early 20th century, including three “brothers” who weren’t blood relatives, but who did share a genealogy of power and influence in oil, real estate and media.

Spitzzeri has lived in Chino Hills for 22 years and is Museum Director at the Workman and Temple Family Homestead Museum in the City of Industry, where he has worked since 1988.

He received his Bachelor of Arts degree and Master of Arts degree in history from California State University, Fullerton. He has also published local, regional and state history in many journals and anthologies.

His book, The Workman and Temple Families of Southern California, won a 2009 Award of Merit from the American Association for State and Local History.

Since 2008, Paul has maintained the blog www.carboncanyonchronicle.blogspot.com.

Contributed by Dennis Denise Cattern, Chino Hills Historical Society. For more information please call (909) 597-6449 or email to chhistory@aol.com.