Member of:

•  National Trust for Historic
•  Conference of California
    Historical Societies
•  American Association for
   State & Local History

Home   l   About   l   Contact

Costa Mesa, California

Public Events
Society News
Photo Gallery
Costa Mesa Timeline
Diego Sepulveda Adobe
Museum & Headquarters
Santa Ana Army Air Base
Collections & Resources
Gift Shop



CMHS Facebook Link


Early California Days


Costa Mesa Historical Society is pleased to announce cultural anthropologist Stephen O’Neil will be speaking on Sunday May 20, 2018 at our annual Early California Days at the Diego Sepulveda Adobe in Estancia Park!


Stephen O’Neil has over thirty years of experience as a cultural anthropologist in California.  He has researched and written on ethnography, archaeology and history, concentrating on the ethnohistory of southern California tribal peoples.  O’Neil also has archaeological experience, mostly on Native American prehistoric sites, but also Spanish, Mexican and American period adobes. He received his M.A. in cultural anthropology at California State University, Fullerton.

Stephen will be speaking to us about “Native American Traditions of Orange County”

Ř  What the Portola Expedition of 1769-70 observed when they came through;


Ř  Place names the Natives gave to the landscape reflecting their knowledge of natural resources;

Ř  OC Library's "Voices" project to remind everyone that the Acjachemen and Tongva are still here and a part of the modern community.

So come bring a friend as we learn about this fascinating history in your own backyard!

1:00pm:  Tours of the Adobe Begin

1:30pm:  Speaker Presentation

2:30pm:  Tours of the Adobe continue

The City of Costa Mesa will be running a 14 seat van from Balearic Center, where there is additonal parking, to the Adobe and back.

It will be circling the area and picking up/dropping off parkers between 1pm and 3pm only.

The Van will have EARLY CALIF DAYS signs on the front and side windows

Event runs from 1:00 pm-3:00 pm, presentation at 1:30. Free admission and refreshments. The adobe is located at 1900 Adams Ave. (turn north onto Mesa Verde Dr West., left on Boa Vista Dr, left into Estancia Park). For further information call (949) 631-5918 or visit or go to facebook/costa mesa historical society




Important information on how to access our parking lot when visting:

The Anaheim Ave. entrance is closed. Enter from Park Ave. near the fire station.


We wanted you to be among the first to be aware that the Historical Society has released its second book on Costa Mesa History, covering the years 1940-2003.  The book tells the story of Costa Mesa’s growth from infancy to its coming of age.
The book is available at the Costa Mesa Historical Society, 1870 Anaheim Ave, 949-631-5918,
From the back Cover: Perhaps no one could have foreseen the amazing transformation of Costa Mesa from a sleepy rancho to today’s bustling “City of the Arts.”  Along with other Orange County cities, Costa Mesa experienced explosive growth, redevelopment, county bankruptcy, traffic, and environmental issues.  While navigating these events, Costa Mesa emerged with its own brand of Southern California cityhood


Give the gift of history and help support the CMHS at the same time!

Lots of books and memorabilia to select from including commemorative plates, paperweights and SAAAB items, note paper, postcards and out of print items.

And we have many historic photos to choose from for your home, office or gift! 


"Costa Mesa My Sweet Home" video


Also still available is our first book Early Costa Mesa: more info

The Costa Mesa Historical Society welcomes you to its online home.  The Society is an all-volunteer, non-profit group whose mission is to collect, preserve and promote the history of the Costa Mesa area.

We encourage anyone interested in Costa Mesa history to explore our website.  Also, we extend an open invitation to interested individuals, families, students, professionals, businesses and organizations to become members of the Society.

This website contains but a tiny sampling of the many resources available to you.  Please contact us should you need more information.



Copyright © 2002-2018 Costa Mesa Historical Society