Lewis Ankeny McArthur, Oregon Geographic Names (1952)
“ Iron Mountain, elevation 654 feet, a conspicuous point near the Pacific Ocean about four miles north of Newport, is remarkable for its conical symmetry. The upper part is red brown and has a sort of burned, metallic appearance, hence the name. The mountain is just east of the Oregon Coast Highway. IRONSIDE, Malheur County. The name Ironside was first applied in 1891. It is said that J. M. Young, who was the first postmaster, suggested the name of the post office. The name was chosen because of the proximity of Ironside Mountain, the most prominent geographical feature nearby. ”
