Splinter raises : History
West *
A Q J 10 7
5 3
8 4 2
A K 5
1♠ - 4♦* -
K 9 8 3
A K 7 2
Q 9 7 4

* = "Splinter" : singleton or void in bid suit (), 4+ trumps, 11+ HCP, ≤ 7 losers

Lt. Col. Beasley played for England in the very first official Bridge World Championship in 1933.

Dorothy Truscott In one game against the American team, Beasley made (in the middle of the auction) a bid much like a modern Splinter.
This enabled Beasly to arrive at a good Slam contract with only 22 HCP in the combined hands.

The American "Bridge Hall of Fame" player Dorothy Truscott is generally credited with having developed the idea of Splinter bids, but only much later in 1964.

The Three Musketeers of effective Slam bidding
Roman Key Cards, Multi Cues and Splinter raises form the ideal trio of brilliant bidding tools used to identify a wide range of hand combinations suitable for a Slam contract, as well as those hand combinations which are not suitable.