[3] In 1939, just prior to the opening of the tunnel, Ernest White built a three-room home that later served as the Arch Cape post office and general store.

"[6] According to the book Images of Cannon Beach by Deborah Coyle, an Arch Cape post office was established in 1891, with weekly mail delivery by foot or horseback until 1912, when train service began.

In the 1940s and '50s, Ernest White's former beach house (the present day Inn at Arch Cape) served as the post office and general store for the community.

[8] A historical marker on the east side of Highway 101 at the north end of Arch Cape describes the wreck of the USS Shark (1821) in 1846.

[11] According to the 2007 Clatsop County Comprehensive Plan, the Arch Cape headland "represents an important scenic landmark for the community, the region and the State.

[13] Castle Rock, a large castle-shaped monolith formed by lava flows millions of years ago, sits just off the coast of Arch Cape.

According to the Oregon Ocean Resources Management Task Force (1991), "In 1988, more than 10,000 common murres were recorded nesting here in addition to 4 other species of marine birds.

According to a 1974 report titled "An Environmental Plan of Southwest Clatsop County" (Morgan & McKey, Western Interstate Commission for Higher Education, Boulder, Colo.),[19] temperatures in the area are "remarkably stable throughout the year.

In their book Arch Cape Chronicles, authors David and Alma English assert that the shingle mill "had an enormous impact on this area since it was...a large operation [that] employed 40 men at one time."