Statistics for occurrence #1 of “Petersburg, Va.” in chapter 28 of Thomas Wentworth Higginson, Massachusetts in the Army and Navy during the war of 1861-1865, vol. 1, Mass. officers and men who died.:

... Inf.,Spotsylvania, Va.,May 12, 1864. Drew, Herbert M.,35th Mass. Inf.,Antietam, Md.,Sept. 17, 1862. Drew, Horace,12th Mass. Inf.,Spotsylvania, Va.,May 12, 1864. Driscoll, Jeremiah,56th Mass. Inf., Petersburg, Va. ,June 23, 1864. Ducy, John,38th Mass. Inf.Port Hudson, La.,May 27, 1863.
...
Max. Freq. Min. Freq.
Entity Corpus Doc Corpus Doc  
† Petersburg, Va. (Virginia, United States) 3,884 834 1,976 834 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.