Statistics for occurrence #1 of “Blackman, John H.” in chapter 1, page 334 of Thomas Wentworth Higginson, Massachusetts in the Army and Navy during the war of 1861-1865, vol. 1, Mass. officers and men who died.:

...ss. Inf.,Petersburg, Va.,July 30, 1864. Blackburn, Robert, Jr., Sergt.,20th Mass. Inf.,Wilderness, Va.,May 6, 1864. Blackington, Lyman D., Corp.,19th Mass. Inf.,White Oak Swamp, Va.,June 30, 1862. Blackman, John H. ,12th Mass. Inf.,Fredericksburg, Va.,Dec. 13, 1862. Blaine, Hugh,20th Mass. Inf.,Gettysburg, Pa.,July 3, 1863. Blair, Harmon H.,22d Mass. Inf.,Mechanicsville, Va.,June 26, 1862. Blaisdell, William,...
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