1938 J. Culbertson xv. 184 The presence or absence of control cards can affect the success of your slam contract.
1959 8 Jan. 84/2 There is every reason to hope for a slam contract in some suit.
1977 16 Apr. 11/8 He..bid Three Diamonds which..in conjunction with the cue~bids, produced a slam contract in the wrong suit.