George Corsan, Sr. - ISHOF

Developed YMCA swimming programs; Head instructor of the International and National YMCA's; originated mass method of swimming instruction.

Happy 80th Birthday Lance Larson - Sub-Minute Butterfly Pioneer Who Triggered The Timepad - Swimming World News

The Butterfly: A Complex History for a Complex Stroke

Shedding Fresh Light on the History of the Butterfly Stroke (Chapter 2) - As If By Design

Happy 80th Birthday Lance Larson - Sub-Minute Butterfly Pioneer Who Triggered The Timepad - Swimming World News

Happy 80th Birthday Lance Larson - Sub-Minute Butterfly Pioneer Who Triggered The Timepad - Swimming World News

George Hebdon Corson - Etobicoke Historical Society

Happy 80th Birthday Lance Larson - Sub-Minute Butterfly Pioneer Who Triggered The Timepad - Swimming World News

International Swimming Hall of Fame – Wikipedia

The Butterfly: A Complex History for a Complex Stroke

Happy 80th Birthday Lance Larson - Sub-Minute Butterfly Pioneer Who Triggered The Timepad - Swimming World News

Plunge for distance - Wikipedia