In his efforts to promote the Pinnacles, Hain became convinced that the Pinnacles were an "extraordinary mountain" described by Captain George Vancouver and pictured by John Sykes in his book "Voyage of Discovery", which documented the Vancouver Expedition. Hain began to refer to the mountain as "Vancouver's Pinnacles", a term that was picked up by "Sunset" in a 1903 article. References to "Vancouver's Pinnacles" persisted until 1955, when analysis of the Sykes picture indicated that the mountain described by Vancouver was actually located near Fort Ord, within easy reach of the day trip described by Vancouver.