Statistics for occurrence #1 of “National” in entry petersburg of Harper's Encyclopedia of United States History:

... in its defence, and during the night (June 15-16) very strong works were thrown up. The coveted prize was lost. Twenty-four hours before, Petersburg might have been easily taken; now it defied the National s, and endured a most distressing siege for ten months longer. At the middle of June, a large portion of the Army of Northern Virginia was holding the city and the surrounding intrenchments, and a g...
Max. Freq. Min. Freq.
Entity Corpus Doc Corpus Doc  
National (West Virginia, United States) 116 16 0 0 0 user votes
National (Maryland, United States) 128 8 0 0 0 user votes
National (Nevada, United States) 42 12 0 0 0 user votes
National (Washington, United States) 2 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.