For the maps and plats used as evidence in the various court cases involving the boundary see:
 
 

 msa_sc_1399_1_101.jpg
Captain John Smith's map of Virginia, 1606 (1612). MSA SC 1399-1-101


  detail from the 1885 Martenet Map (MSA SC 5087-13-2) showing the southern boundary of Maryland from the Fairfax stone
 


detail from the Huntingfield Collection, Martenet Atlas, 1865, for use in the schools, m000412a.tif
 


detail from 1865 Martenet wall map of Maryland, MSA SC 5200.  This map is the same one that was given to West Virginia from the Maryland State Library Collection and used in West Virginia's response to Maryland's 1890 suit before the Supreme Court of the U.S. [from ecp-cd-251; msa s 50-517]
 

Note that the court cases involving the southern boundary did not refer to the Captain Snow map which was purportedly drawn ca. 1754.

See the Snow map at the Library of Congress American Memory web site: