1793     Jan. 26/2  				When you hold two cards of a kind, and a third is upon the table, you may..lay down one of them.
1865    G. M. Evans  43  				As a general thing, ‘pat hands’, that is, hands which fall complete without drawing (as flushes, fulls, or four of a kind)—should be avoided, as they tend to excite suspicion.
1940    O. Jacoby  v. 36  				The time to sandbag is when you have three of a kind or better.
1992    A. R. Taylor  45/2  				If the next player can play a similar card (i.e. lay out the third card of three-of-a-kind), he gets 6 points for a pair-royal.
2006     		(Midwest ed.)	 12 Nov.  iii. 16/3  				His four of a kind beat his remaining opponent's pair of queens.