"Blaine is a city at the northwest boundary and an important United States Customs port, on Drayton Harbor, Semiahmoo Bay. It was named by Cain Bros., townsite proprietors, who filed their first plat September 13, 1884. In 1858 it was an ambitious settlement called Semiahmoo, the name of the tribe of Salish Indians who then inhabited the Semiahmoo Bay Country."

(Lottie Roeder Roth, "Origin of names," History of Whatcom County. Chicago: Lewis, 1926. Chapter XLI p. 937-961.)