Ferndale Library, Carnegie library in Ferndale, United States.

Ferndale Library is a one-story reinforced concrete building in Classical Revival style, designed by Eureka architect Warren Skellings on a 40-by-40-foot lot deeded by Adam Putnam. Built by Ackerman and Ackerman for $7,775.40 and finished in 1910, it keeps its original bookcases and furniture, with a 1977 rear addition for a children's room and storage.

The library received a grant of 8,000 dollars from Andrew Carnegie in 1908 and opened its doors in 1910. It was part of a nationwide effort to bring library services to small communities across the United States.

The library serves as a gathering place for Ferndale residents who come to access books, digital materials, and educational programs offered through the Humboldt County system. It remains central to community life and learning in this small northern California town.

The one-story building sits on a 40-foot by 40-foot lot deeded by Adam Putnam, with the deed requiring the land to revert to the grantor if it ceased to be used as a library. A rear addition of 1977 added a children's room, a bathroom and storage while keeping the original style and furnishings. The main floor is reached without stairs.

This is the only Carnegie Library in northwestern California still operating as a public library today. The building has served this community continuously for over a century without interruption.