Green’s Dictionary of Slang

a New Yorker.

1755		New Hampshire Provincial Papers VI (1872) 440: In the Engagement with Genl Diescau about eighty of our men with about 40 Yorkers [DA].
1838		‘Uncle Sam’s Peculiarities’ in Bentley’s Misc. IV 140: The Yorker too, who’s cuter at clearing out of a bargain than ever I seen.
1844		‘Jonathan Slick’ High Life in N.Y. II 8: Them Yorkers have larned you to be ashamed of eating onions.
1863		G.W. Whitman in Civil War Letters 16 Aug. 102: We have had full accounts of the procedings [sic] of the mob in New York, and its almost enough to make a fellow ashamed of being a Yorker.
1870		C.G. Leland ‘The First Edition of Breitmann’ in Hans Breitmann in Church 127: To him aut-worded a Yorker, / Who shoomp den dimes de boun-ti-ee, / (De only dings he lossed in de war / Was a sense of broperty).
1887		W.T. Call Josh Hayseed in N.Y. 7: A lot of Yorkers come up our way.
1903		H. Hapgood Autobiog. of a Thief 82: When these Rufus’s up the State get a Yorker or a wise guy all over, winking knowingly, and said: ‘You cannot come that over me!’ ‘Come what over you?’ ‘Oh, I’m no fool! I know how you Yorkers work the trains.’.
1908		‘Old Sleuth’ Dock Rats of N.Y. (2006) 96: Were you ever ‘nipped’ by a Yorker my friend?
1942		LeGrand Cannon Look to the Mountain 204: Then the Yorkers, their Governor, tried to do the same thing — only he was a little mite late [DA].