Weller, O.E.; Parran, Thomas; Miller, W.B.; Perry, John M.; Ramsay, Andrew; Smith, J. Frank (May 1916). Annual Reports of the State Roads Commission of Maryland (1912–1915 ed.). Baltimore: Maryland State Roads Commission. pp. 59, 122, 124, 128. Retrieved November 24, 2017.
Mackall, John N.; Darnall, R. Bennett; Brown, W.W. (January 1927). Annual Reports of the State Roads Commission of Maryland (1924–1926 ed.). Baltimore: Maryland State Roads Commission. pp. 33, 95. Retrieved September 28, 2010.
Byron, William D.; Lacy, Robert (December 28, 1934). Report of the State Roads Commission of Maryland (1931–1934 ed.). Baltimore: Maryland State Roads Commission. p. 350. Retrieved November 24, 2017.
Tabler, H.E.; Wilkinson, C. Nice; Luthardt, Frank F. (December 4, 1936). Report of the State Roads Commission of Maryland (1935–1936 ed.). Baltimore: Maryland State Roads Commission. p. 67. Retrieved November 24, 2017.
Beall, J. Glenn; Jarboe, Elmer R.; Obrecht, George F., Sr. (March 4, 1939). Report of the State Roads Commission of Maryland (1937–1938 ed.). Baltimore: Maryland State Roads Commission. p. 105. Retrieved September 28, 2010.{{cite book}}: CS1 maint: multiple names: authors list (link)
Reindollar, Robert M.; George, Joseph M.; McCain, Russell H. (December 20, 1950). Report of the State Roads Commission of Maryland (1949–1950 ed.). Baltimore: Maryland State Roads Commission. p. 110. Retrieved November 24, 2017.
Highway Information Services Division (December 31, 1996). Highway Location Reference, Volume 2(PDF). Baltimore: Maryland State Highway Administration. Queen Anne's County, p. 16. Retrieved November 24, 2017 – via Maryland State Archives.
Highway Information Services Division (December 31, 1998). Highway Location Reference, Volume 2(PDF). Baltimore: Maryland State Highway Administration. Queen Anne's County, p. 18. Retrieved November 24, 2017 – via Maryland State Archives.
roads.maryland.gov
Highway Information Services Division (December 31, 2016). Highway Location Reference. Maryland State Highway Administration. Retrieved November 22, 2017.
Highway Information Services Division (December 31, 2018). Highway Location Reference. Maryland State Highway Administration. Retrieved March 21, 2020.