How Katie Ledecky became better at swimming than anyone is at anything - The Washington Post
List of world records in swimming - Wikipedia
Russian swimmer Kolesnikov lowers 50 back world record again | The Seattle Times
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Florent Manaudou | World Record 50m Freestyle | 2014 FINA World Swimming Championships Doha - YouTube
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WORLD RECORD Men's 100m Freestyle S13 | Final | 2015 IPC Swimming World Championships Glasgow - YouTube
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World record progression 800 metres freestyle - Wikipedia
What is the Fastest 50 Free Time Possible? | When Will We See a 16 Second 50 Free? - MySwimPro
Caeleb Dressel shatters 50 freestyle record, goes sub-18 twice (video) - OlympicTalk | NBC Sports
Florent Manaudou | World Record 50m Freestyle | 2014 FINA World Swimming Championships Doha - YouTube
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George Corones with 99 years, swam 50 meters in 56 seconds
Caeleb Dressel sets world record in 50-meter freestyle at ISL Grand Finale ahead of 2020 Tokyo Olympics - CBSSports.com
Chasing Water: Elegy of an Olympian: Ervin, Anthony, Markides, Constantine: 9781617754449: Amazon.com: Books
Katie Ledecky sets new world record in 800 meters for her fourth gold in Rio - The Washington Post
Rio Olympics 2016: Katie Ledecky, swimmer who may well be the world's best athlete | Financial Times
World record progression 50 metres freestyle - Wikipedia
Swimming: Sjostrom breaks women's 50 meters freestyle world record | Reuters
50m Freestyle World Record
Chasing Water: Elegy of an Olympian: Ervin, Anthony, Markides, Constantine: 9781617754449: Amazon.com: Books
1500m Freestyle World Record
