San Juan Island National Historical Park visitor services were designed, in part, to provide information for visitors arriving after hours.

Self-guided walk booklets are available in trail head boxes at both park units and year round in the American Camp visitor center. The park map and guide, annual newspaper, Pig War education resource guide and Junior Ranger worksheets are also available online and year round in the American visitor center.

Additionally, at both camps, wayside exhibits provide immediate interpretive information at locations of historical significance.