These I have gleaned from The Times (issue number in square brackets). If anyone has any info between these first two entries I would be pleased to know!
[46128]
On Saturday 7 May 1932, at the North Memorial Institute, Maesteg, Sidney Smith, "one of the youngest professionals in the game", equalled the record break held by Joe Davis, viz. 105.
[47556]
On Friday 11 December 1936, Sidney Smith, in the 58th frame of a sealed handicap best-of-71 match against Tom Newman, compiled a 133 break, surpassing the record held by Joe Davis and Horiace Lindrum of 114. He took six blacks, six pinks, two blues and a green with the reds, having gone in-off from his break-off.
[47627]
On Saturday 7 March 1937, Joe Davis, in an exhibition frame played after his 30-1 defeat of Bill Withers in the World Championship, made a world record 135 break. He took eight blacks, four pinks, two browns and a blue with the reds.
[48154]
On Wednesday 16 November 1938 Joe Davis surpassed his own world record 135 break when he made a 137 against Horace Lindrum at Leicester.
[48174]
On Friday 9 December 1938, in the 53rd frame of his 71-frame match with Alec Brown in which Davis was conceding 35 points a frame and with Brown leading 34-18, Joe Davis made a world record 138. He took eleven blacks, pink, two blues and a green with the reds. He needed to play a deep screw shot on the pink to position for the black, and even then was left with a nasty thin cut black.
[50991]
At Glasgow on Monday 9 February 1948 Joe Davis beat his own ten-year-old record break of 138, when he compiled a 140 during the first day of a best-of-73 match with Walter Donaldson. He took ten blacks, three pinks and two blues with the reds and led 11-1 at the end of the day's play.
[51269]
On Saturday 1 January 1949, Joe Davis, in an exhibition match after beating Walter Donaldson 42-29 at Leicester Square Hall, compiled a record 141 break, superseding his own record of 140. He took eleven placks, three pinks and a brown with the reds.
[51607]
On Friday 4 February George Chenier (Canada) made a world record break of 144 against Walter Donaldson at Leicester Square Hall, London. He took 12 blacks and three pinks off the reds in his total clearance – superseding Joe Davis's 141 above.
==================
[51245, 3 December 1948]
"The Billiards Association and Control Council have sent a break certificate to a young Montreal player, L. Levitt, who has made the perfect snooker break of 147 ... . The feat was accomplished on November 24 at the Windsor Bowling and Billiards Academy, Montreal, and was properly witnessed. It is not yet known, however, if the table conformed with the standard requirements necessary to make the break a new world record." © The Times
[46128]
On Saturday 7 May 1932, at the North Memorial Institute, Maesteg, Sidney Smith, "one of the youngest professionals in the game", equalled the record break held by Joe Davis, viz. 105.
[47556]
On Friday 11 December 1936, Sidney Smith, in the 58th frame of a sealed handicap best-of-71 match against Tom Newman, compiled a 133 break, surpassing the record held by Joe Davis and Horiace Lindrum of 114. He took six blacks, six pinks, two blues and a green with the reds, having gone in-off from his break-off.
[47627]
On Saturday 7 March 1937, Joe Davis, in an exhibition frame played after his 30-1 defeat of Bill Withers in the World Championship, made a world record 135 break. He took eight blacks, four pinks, two browns and a blue with the reds.
[48154]
On Wednesday 16 November 1938 Joe Davis surpassed his own world record 135 break when he made a 137 against Horace Lindrum at Leicester.
[48174]
On Friday 9 December 1938, in the 53rd frame of his 71-frame match with Alec Brown in which Davis was conceding 35 points a frame and with Brown leading 34-18, Joe Davis made a world record 138. He took eleven blacks, pink, two blues and a green with the reds. He needed to play a deep screw shot on the pink to position for the black, and even then was left with a nasty thin cut black.
[50991]
At Glasgow on Monday 9 February 1948 Joe Davis beat his own ten-year-old record break of 138, when he compiled a 140 during the first day of a best-of-73 match with Walter Donaldson. He took ten blacks, three pinks and two blues with the reds and led 11-1 at the end of the day's play.
[51269]
On Saturday 1 January 1949, Joe Davis, in an exhibition match after beating Walter Donaldson 42-29 at Leicester Square Hall, compiled a record 141 break, superseding his own record of 140. He took eleven placks, three pinks and a brown with the reds.
[51607]
On Friday 4 February George Chenier (Canada) made a world record break of 144 against Walter Donaldson at Leicester Square Hall, London. He took 12 blacks and three pinks off the reds in his total clearance – superseding Joe Davis's 141 above.
==================
[51245, 3 December 1948]
"The Billiards Association and Control Council have sent a break certificate to a young Montreal player, L. Levitt, who has made the perfect snooker break of 147 ... . The feat was accomplished on November 24 at the Windsor Bowling and Billiards Academy, Montreal, and was properly witnessed. It is not yet known, however, if the table conformed with the standard requirements necessary to make the break a new world record." © The Times
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