Simpson family.

Charles P. Simpson served from 1913 to 1922 as chief engineer for John D. Rockefeller, Jr., building the carriage road system for Rockefeller's private summer estate at Seal Harbor, Maine. Simpson was born in Sullivan, Maine on September 19, 1848. He studied engineering in California and in 1880 retuned to Sullivan where he established an engineering and surveying office. Work on the Seal Harbor carriage road system began in 1915 and was completed in 1930. Simpson's son, Paul Dyer Simpson, succeeded his father as chief engineer in 1922 and continued in the post until 1940, when the roads were incorporated into Acadia National Park. Charles Simpson died in 1928; Paul Simpson died in 1963.