George Corsan, Sr. - ISHOF

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

IAHSFF 2012_Book - Flip eBook Pages 51-100

Plunge for distance - Wikipedia

IAHSFF 2012_Book - Flip eBook Pages 51-100

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

Conceptual and Empirical Exploration

IAHSFF 2012_Book - Flip eBook Pages 51-100

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

2019 Yearbook_1PDF Pages 1-50 - Flip PDF Download

The Butterfly: A Complex History for a Complex Stroke

George Hebdon Corson - Etobicoke Historical Society

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

Dave Armbruster - ISHOF

International Swimming Hall of Fame – Wikipedia