From The British Chess Magazine,Volume 8, this report of Armand Edward Blackmar's death on 28 Oct 1888:
News reaches us from America of the death of another strong and, by his original work, widely-known chessplayer—Ormand [sic] Edward Blackmar, born in Vermont in 1826. He settled in New Orleans in 1860, and was one of the original founders of that city's club in 1880. He was a successful competitor in local tournaments, and has always been looked upon as one of the strongest local players. His reputation rests, however, on his original analyses. His gambit, well known to all students, is not much played in this country, probably on account on the apparent danger of its positions. It gives, however, so strong an attack as to be generally declined by the second player. Mr. Blackmar was also the inventor of an attack on similar lines in the Dutch opening (1 P to Q 4, P to K B 4; 2 P to K 4, P takes P ; 3 P to K B 3), which still awaits the serious attention of analysts. He died at New Orleans on the 28th October, deeply regretted, it is evident, by a large circle of local players.