1. Wood Analysis From High Status Coffins At Historic St. Mary's City;Alden,2007
2. Proceedings and Acts of the General Assembly, April 1666–June 1676;Archives of Maryland,1889
3. Ecophysiology of Ambrosia artemisiifolia: a successional dominant;Bazzaz;Ecology,1974
4. Calvert, Charles 1682/1683 Copy of Letter from Charles Calvert to William Penn, 24 January 1682/83. Calvert Papers, The Young Collection, No. 16. Enoch Pratt Free Library, Baltimore, Md.
5. Robert Cole's World: Architecture and Society in Early Maryland;Carr,1991