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Diego Sepulveda Adobe Estancia of Costa Mesa
Costa Mesa, California

History, Historic House, Historical Society, Military

Our Society has two facilities, the Diego Sepulveda Adobe (California Historical Landmark #227), and our headquarters/museum/research facility at 1870 Anaheim Street in Costa Mesa. A part of our group, the Santa Ana Army Air Base Wing, covers the Santa Ana Army Air Base which was a pre-flight school for pilots, navigators and bombardiers from 1942-1946. We have collections covering both Costa Mesa and the SAAAB, as well as exhibits for both. When corresponding, please use our P.O. Box 1764, CM, 92628 address.

MUSEUM CONFERENCES

Oregon Museum Association 2024 Conference

September 8, 2024 - September 10, 2025

North Bend, Oregon

2025 California Association of Museums Conference

February 18 - 22, 2025

San Fransico, California

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