The Humboldt County Library consists of a main library in Eureka, ten branch libraries throughout the county, and a bookmobile. The Eureka branch is located on the edge of Old Town, next to the Carson Mansion bordered by the marina. A handsome multi-story redwood structure, the Eureka branch hosts regular community events for children and adults. It also houses the Humboldt Room, an immense space overlooking the waterfront where visitors can access a unique collection of local historic documents and primary research materials.