Serving Altadena since 1935

The Altadena Historical Society (AHS) was founded in 1935. We gather, preserve, and share print and digital information about the people, places, and events that have shaped the Altadena community.

Your AHS membership dues and donations allow AHS to continue—and expand—our work in the form of quarterly lectures, collection archives, exhibits, research, publishing, community outreach and more.

AHS is one of the oldest volunteer groups in the community. Explore our website to learn about all we offer—then visit us at the Altadena Community Center.


9 a.m. to 1 p.m.


730 E. Altadena Dr.  MAP
Altadena, CA 91001-2351


Send us a message.



Naomi Hirahara, author of the Mas Arai mysteries, will discuss the
Japanese-American experience on April 25. Click for full details.


Our first exhibit continues through June 30, 2016. Don't miss:

“Altadena in the Rose Parade: A Hundred Years of Memories”

© 2015 Altadena Historical Society