Statistics for occurrence #1 of “Antietam, Md.” in chapter 112, page 449 of Thomas Wentworth Higginson, Massachusetts in the Army and Navy during the war of 1861-1865, vol. 1, Mass. officers and men who died.:

...rgt.,56th Mass. Inf.,Aug. 19, 1864,Carver Hosp., Washington, D. C., Sept. 1, 1864. Cosgrove, Michael,15th Mass. Inf.,– –Point Lookout, Md., Sept. 3, 1862. Cossar, Joseph,35th Mass. Inf., Antietam, Md. ,Sept. 18, 1862. Costello, John,1st Mass. H. A.,June 16, 1864,Before Petersburg, Va., July 26, 1864. Costello, Thomas F.,19th Mass. Inf.,– –Wilderness, Va., May 24, 1864. Coughlan, John...
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