Burgess, J., K. Szlavecz, N. Rajakaruna, S. Lev, and C. Swan. "Vegetation Dynamics and

Mesophication in Response to Conifer Encroachment within an Ultramafic System." Australian Journal of Botany 63.4 (2015): 292. Web. **

​

Harrison, Susan, and Nishanta Rajakaruna. Serpentine: The Evolution and Ecology of a Model System. Berkeley: U of California, 2011. Print.

​

Marye, William B. "The Great Maryland Barrens: II." Maryland Historical Magazine June 1955: 120-42. Web.

​

Marye, William B. "The Great Maryland Barrens: III." Maryland Historical Magazine Sept. 1955: 234-53. Web.

​

Marye, William B. "The Great Maryland Barrens." Maryland Historical Magazine Mar. 1955: 11-23. Web.

​

Rajakaruna, Nishanta, Tanner B. Harris, and Earl B. Alexander. "Serpentine Geoecology of Eastern North America: A Review." Rhodora 111.945 (2009): 21-108. Web.

​

Tyndall, R. Wayne, and James C. Hull. "Vegetation, Flora, and Plant Physiological Ecology of Serpentine Barrens of Eastern North America." Savannas, Barrens, and Rock Outcrop Plant Communities of North America. Ed. Roger C. Anderson, James S. Fralish, and Jerry M. Baskin. Cambridge, UK: Cambridge UP, 1999. 67-82. Print. **

​

Tyndall, R. Wayne. "Historical Considerations of Conifer Expansion in Maryland Serpentine "Barrens"" Castenea 57.2 (June 1992): 123-131. Print. **

​

Tyndall, R. Wayne. "Soil Differences between Extant Serpentine Oak Savanna and Grassland in Soldiers Delight Natural Environment Area, Maryland." Castanea 77.3 (2012): 224-30. Web.

​

Tyndall, R. Wayne. "Vegetation Structure and Flora of a Serpentine Pine-Cedar Savanna in Maryland." Castanea 54.3 (1989): 191-99. JSTOR. Web. 26 Dec. 2016.**

​

Youssi, Adam. "On the Susquehannocks: Natives Having Used Baltimore County as Hunting Grounds." The Historical Society of Baltimore County RSS. The Historical Society of Baltmore, 2006. Web

​