Contra Costa County Genealogical Society - East Bay Area, CA

12/16/2025

Register for this FREE event via Zoom on CCCGS.net website. Click on "Events" and then fill in the required information.

11/02/2025

Register for this FREE webinar via Zoom at cccgs.net
When you have accessed our site, click on "Events" to register by following the prompts.

11/01/2025

🌼💀 Happy Día de los Mu***os! 💀🌼
Here in Contra Costa County, this colorful tradition fills our communities with remembrance and joy. It’s a time to honor those who came before us — just as we do through genealogy — by keeping their names, stories, and spirits alive. 🕯️✨

10/23/2025

This weekend...

Join us for our Open House Event from 10a-2p this Saturday and Sunday, Oct 25th and 26th! Although the mines and Greathouse Visitor Center are closed, we are offering multiple above-ground opportunities to learn more and enjoy the park! There will be guided strolls around the former Somersville townsite, various activity tables, and staff at the Rose Hill Cemetery - so come on out and join us!

10/16/2025

This morning, a magnitude 3.1 earthquake rattled near Berkeley — a small jolt, but one that makes us pause and remember that the earth beneath us is always moving.
Back on October 17, 1989, at 5:04 p.m., the Bay Area was hit by the Loma Prieta earthquake (magnitude ~6.9). It changed lives, collapsed freeways, and reshaped our region’s history.
This year, marks the 36th anniversary, and we pause in memory, respect, and humble awareness.
Share with us — what’s your memory or story connected to Loma Prieta?

10/08/2025

Our Fall webinar is almost here, Oct 18. This webinar via Zoom is FREE for members of CCCGS. Register on our website. Non-members would need to join our Society, and then register for this webinar. See details below.

10/06/2025

CCCGS friends — the skies are putting on a show tonight! On October 6, 2025, we will witness a Harvest Moon, and this year it’s no ordinary full moon — it’s also a supermoon.
What makes this moon special:
• The “Harvest Moon” is defined as the full moon closest to the autumnal equinox (which occurred on September 22). In 2025, the full moon on October 6 is slightly closer to the equinox than September’s moon, giving it the title.
• As a supermoon, the moon is at or near its closest approach to Earth (perigee), which makes it appear a bit larger and brighter than a typical full moon.
• The full phase peaks around 11:47 p.m. Eastern Time / 8:47 p.m. Pacific.
Viewing tips
• Watch for moonrise in the east shortly after sunset — the moon may appear with warm tones (golden, amber) near the horizon.
• Choose a spot with a clear eastern horizon and minimal light pollution.
• A good pair of binoculars or a telephoto lens can enhance details like crater shadows and lunar “seas.”
• Photograph during the first 15–20 minutes after moonrise — that’s when atmospheric color effects and “moon illusion” (the moon seeming especially large near the horizon) are strongest.

If you get a crisp photo tonight, share it with us in the comments — we’d love to see how the Harvest Supermoon looks from your corner of the CCCGS community.

Happy moon-watching! 🌙

09/25/2025

Our Fall webinar is FREE for members of CCCGS. Non-members may purchase a one-year membership on our website (cccgs.net). You will then be able to register for the webinar.

09/19/2025

FREE for CCCGS members or become a member to hear this DNA webinar for only $30/year, which includes a monthly informative newsletter to help with your genealogical research.

09/10/2025

09/02/2025

✨ Unlock Hidden Genealogy Resources from Home! ✨

Join Allison DePrey Singleton, MLS, MA, Genealogy Services Manager, as she walks us through the library’s powerful online offerings. Discover how to use the Periodical Source Index (PERSI)—a searchable treasure trove of genealogy articles, records, and local histories you won’t want to miss.

📅 Thursday, September 11
🕡 6:30 – 8:00 p.m. (PT)
📍 Online via Zoom

Don’t miss this chance to learn how to make the most of PERSI—right from your desk!

👉 Register here: https://us06web.zoom.us/meeting/register/CZ383_XwRMGX1t2pB9_96A #/registration

08/28/2025

Labor Day, Mon September 1st, at the park for two free programs to learn more about history of mining and the communities that once thrived on this landscape.

Join us this Labor Day, Mon September 1st, at the park for two free programs to learn more about history of mining and the communities that once thrived on this landscape. We hope to see you there!