Haughey breaks world record on first day of World Swimming Championships (25m)
Katie Ledecky Dominates, But Michael Phelps Comes Up Short in 100-Meter Butterfly - WSJ
World record progression 100 metres freestyle - Wikipedia
Etiene Medeiros | World Record 50m Backstroke | 2014 FINA World Swimming Championships Doha - YouTube
World record progression 50 metres freestyle - Wikipedia
Katie Ledecky Breaks 1500 Free World Record by 10 Seconds; Gets 800 AR En Route
SWIMMING WORLD RECORDS (25 m) Daiya Seto -200 m. butterfly - 1.48.24 - YouTube
Sarah Sj̦str̦m 24.43 and New 50 Fly World Record РSwimmer's Daily
Three swimming world records broken at World Aquatics championships - CGTN
Katie Ledecky set a new record for the 1,500-meter race — by nearly 10 seconds : NPR
Ledecky challenges world record early but settles for dominating opening night at U.S. Swimming Nationals – Orange County Register
In Photos: How Caeleb Dressel Set an Olympic Record - The New York Times
Haughey breaks world record on first day of World Swimming Championships (25m)
What is the Fastest 50 Free Time Possible? | When Will We See a 16 Second 50 Free? - MySwimPro
World record progression 800 metres freestyle - Wikipedia
List of world records in swimming - Wikipedia
Making waves - Global Times
Katie Ledecky Sets World Record in 1,500-Meter Freestyle - The New York Times
List of world records in swimming - Wikipedia
File:FINA World Swimming Championships (25m) 2014.jpg - Wikimedia Commons
11.8 Seconds - 25 Meter Freestyle Sprint - YouTube
How Many Swimming Laps Are In One Mile? - MySwimPro
WorldRecord | Evolution of the Women's 50m Freestyle World Record
