James De Ruyter Blackwell, Jr. was born 17 May 1870. He was educated at Bethel Military Academy [Fauquier County, Virginia] as a civil engineer. Worked as a civil engineer on various railroads including electric streetcar system. He was on the Board of Survey for Boston and was City Engineer of Seattle, Washington. He also was in private practice. He died 5 September 1929. Further information about this individual or organization may be available in the Special Collections Research Center Wiki: http://scrc.swem.wm.edu/wiki/index.php/James De Ruyter Blackwell, Jr..