Green’s Dictionary of Slang

(US) of or pertaining to New York City.

1705		Boston News-Letter 12 Mar. 2/2: A French Privateer [...] supposed the York man to be a Merchant man [DA].
1825		J. Neal Brother Jonathan II 137: It amounted to one dollar and a quarter, ‘hard money’; or ten shillings ‘York currency’ — or two hundred and fifty half coppers.
1833		C.A. Davis Letters of Major J. Downing (1835) 42: Says he, ‘Major, I reckon I can drink more Saratogue water than you.’ ‘I’ll bet a York shillin of that,’ says I. ‘Done,’ says he; and we stak’d the money.
1844		‘Jonathan Slick’ High Life in N.Y. II 12: Captain Dolittle [...] trying to make out it warn’t worthy a ginuine Yankee to hanker after the York big bugs so.
1868		New England Base-Ballist 6 Aug. 1/2: When it first started it was the intention of the members to play the Massachusetts Game, but they concluded to give the York game a trial [DA].
1887		W.T. Call Josh Hayseed in N.Y. 40: We got sorta used to York ways.
1894		P.L. Ford Peter Stirling 73: His mother [...] had always known her Peter was a hero, and needed no ‘York papers’ to teach her the fact [DA].