PRATTS' CLUB, 14, Park-pl., St. James's. Election by ballot in committee, which consists of 20 members, five forming a quorum. One black ball in the quorum of five excludes, two in the whole committee. One of the rules provides "That no member shall bring a stranger into the Club under any pretence whatsoever." Entrance, £10 10s; subscription £10 10s.

Charles Dickens Jr. et al, Dickens Dictionary of London, c.1908 edition
(no date; based on internal evidence)