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About the OAC

Finding Aids
Truncation: conserv* finds conservation, etc.
Exact phrase: Enter "Sierra Club"

Advanced Search

A "finding aid" describes and provides an inventory of primary source materials (manuscripts, papers, pictures, etc.) in a collection.


Collection Highlights

The OAC brings together historical materials from a variety of California institutions, including museums, historical societies, and archives. Over 120,000 images; 50,000 pages of documents, letters, and oral histories; and 8,000 guides to collections are available.

Offering easy-to-use search and viewing tools, the OAC organizes images into thematic and institutional collections, such as historical topics, nature, places, and technology. Click on the featured images to learn more or go to our image search page.