Statistics for occurrence #1 of “Maryland” in chapter 51 of Admiral David D. Porter, The Naval History of the Civil War.:

...ties involved in patroling the Potomac, the Rappahannock River was added to Commander Parker's district. There was at one time an extensive contraband trade between Virginia and the lower part of Maryland , by which the Confederates frequently received large amounts of supplies; and the blockade-runners (such as they were) were quite as indefatigable in their attempts to provision the Confederates in V...
Max. Freq. Min. Freq.
Entity Corpus Doc Corpus Doc  
Maryland (Maryland, United States) 18,573 14 3 0 0 user votes
Maryland (Illinois, United States) 0 0 0 0 0 user votes
Maryland (Liberia) 0 0 0 0 0 user votes
Maryland (Louisiana, United States) 0 0 0 0 0 user votes
Maryland (Louisiana, United States) 0 0 0 0 0 user votes
Maryland (Louisiana, United States) 0 0 0 0 0 user votes
Maryland (New Jersey, United States) 0 0 0 0 0 user votes
Maryland (New York, United States) 0 0 0 0 0 user votes

† This entity has been selected by the automated classifier as the most likely match in this context. It may or may not be the correct match.