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Uhl, G. Clinton; Bruce, Howard; Shaw, John K. (October 1, 1930). Report of the State Roads Commission of Maryland (1927–1930 ed.). Baltimore: Maryland State Roads Commission. pp. 81, 87. Retrieved 2010-11-29.
Whitman, Ezra B.; Webb, P. Watson; Thomas, W. Frank (March 15, 1943). Report of the State Roads Commission of Maryland (1941–1942 ed.). Baltimore: Maryland State Roads Commission. p. 101. Retrieved 2010-11-29.
McCain, Russell H.; Bennett, Edgar T.; Kelly, Bramwell (November 12, 1954). Report of the State Roads Commission of Maryland (1953–1954 ed.). Baltimore: Maryland State Roads Commission. p. 209. Retrieved 2010-11-29.
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. 170. Retrieved 2010-11-29.
McCain, Russell H.; Hall, Avery W.; Nichols, David M. (December 15, 1952). Report of the State Roads Commission of Maryland (1951–1952 ed.). Baltimore: Maryland State Roads Commission. p. 190. Retrieved 2010-11-29.