Statistics for occurrence #1 of “Petersburg, Va.” in chapter 1.1 of Southern Historical Society Papers, Volume 37.:

...Va., from the gleanings of the battle fields, and quite largely from the collection throughout the country of window weights, lead pipe, cistern linings, etc. Small lead smelting works were set up at Petersburg, Va. , and under the direction of Dr. Piggott, formerly of Baltimore, not only was the ore from Wythe county and a few other points reduced, but even some progress was made in desilverization by the Pattin...
Max. Freq. Min. Freq.
Entity Corpus Doc Corpus Doc  
Petersburg, Va. (Virginia, United States) 3,884 6 1,976 6 0 user votes
Petersburg, Va. (West Virginia, United States) 13 0 13 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.