County of Londonderry, 1813. This chart of the topography, territory and geology ... is ... / 
Sampson, George Vaughan, The Elder.
Arrowsmith, Aaron.
O'Kane, J.
London :  G. & W. Nicol, 
1814.
Inset: Sections.
'Memoir' pp. 16 359.
Territorial [and] Geological References.