Newspaperman Thomas W. Prosch (1850-1915) and his wife, Virginia McCarver Prosch (1851-1915), lived at this address with his father, Charles Prosch (1822-1913), daughters Edith (1880-1937) and Phoebe (born c. 1889 in WA), and a servant H. Arai (born c. 1890 in Japan). From at least 1888-1900, the Prosch Family resided at 611 9th Avenue. This residence was likely built between 1910-1920. Prosch was a property owner, a publisher of the Seattle Post-Intelligencer, as well as Secretary of the Seattle Chamber of Commerce. In 1891 and 1894, Prosch took the oath of office to become a Tideland Appraiser in Seattle, helping to lay out the tidal flats south of Pioneer Square.

PCAD id: 18195