George Corsan, Sr. - ISHOF

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

2019 Yearbook_1PDF Pages 1-50 - Flip PDF Download

A long night's journey into day: the Odyssey of the butterfly stroke in international swimming - Document - Gale Academic OneFile

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

2019 Yearbook_1PDF Pages 1-50 - Flip PDF Download

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

Plunge for distance - Wikipedia

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

International Swimming Hall of Fame – Wikipedia

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

Butterfly stroke - Wikipedia

George Corsan, Sr. - ISHOF

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