Unidentified woman wearing a bathing costume and cap at the Open Air Pool, Hongkou, Shanghai, 1924

Bill Hutchinson standing in the Open Air Pool with other bathers, Hongkou, Shanghai, 1925

Harry Hutchinson diving into the deep end of the Open Air Pool, Hongkou, Shanghai, 1925

Harry Hutchinson and his friends at the Open Air Pool, Hongkou, Shanghai, 1925

Harry Hutchinson watching Booby diving into the deep end of the Open Air Pool, Hongkou, Shanghai, 1925

Harry Hutchinson diving into the deep end of the Open Air Pool, Hongkou, Shanghai, 1925

Harry Hutchinson and friends at the Open Air Pool, Hongkou, Shanghai, 1925

Swimming at the Open Air Pool, Hongkou, Shanghai, 1925

Unidentified woman with Mabel Hutchinson at the Open Air Pool, Hongkou, Shanghai

Bill and Harry Hutchinson with Booby, at the Open Air Pool, Hongkou, Shanghai

Sarah, Mabel and Fred Hutchinson with friends at the Open Air Pool, Hongkou, Shanghai

Harry, Fred, Mabel and Sarah Hutchinson with friends at the Open Air Pool, Hongkou, Shanghai

Booby diving from a high platform into the Open Air Pool, Hongkou, Shanghai

Swimmers and bathers at the Open Air Pool, Hongkou, Shanghai

Bill and Harry Hutchinson diving with Booby, at the Open Air Pool, Hongkou, Shanghai

Diving from a high platform into the Open Air Pool, Hongkou, Shanghai

Diving from a high platform into the Open Air Pool, Hongkou, Shanghai

Double diving from a high platform into the Open Air Pool, Hongkou, Shanghai

Sarah Hutchinson and Phyllis Colledge posed while paddling, Hong Kong

Four friends going swimming, Hong Kong