William Boone was an American architect who practiced mainly in Seattle, Washington from 1882 until 1905. He was one of the founders of the Washington State chapter of the American Institute of Architects as well as its first president. For the majority of the 1880s, he practiced with George Meeker as Boone and Meeker, Seattle's leading architectural firm at the time. In his later years he briefly worked with William H. Willcox as Boone and Willcox and later with James Corner as Boone and Corner. Boone was one of Seattle's most prominent pre-fire architects whose career lasted into the early 20th century outlasting many of his peers. Few of his buildings remain standing today, as many were destroyed in the Great Seattle fire including one of his most well known commissions, the Yesler – Leary Building, built for pioneer Henry Yesler whose mansion Boone also designed. After the fire, he founded the Washington State chapter of the American Institute of Architects and designed the first steel frame office building in Seattle, among several other large brick and public buildings that are still standing in the Pioneer Square district.

Broadway High School, originally known as Seattle High School, opened in Seattle, Washington in 1902 and was the first dedicated high school built in Seattle.