Adolph Kiefer

Adolph Gustav Kiefer (June 27, 1918 – May 5, 2017) was an American former competition swimmer. He was the oldest living American Olympic champion and last Olympic champion of Berlin. He was also a former world record-holder. Kiefer was also an inventor and innovator of new products related to aquatics competition. He was the first man in the world to swim 100-yard backstroke in under one minute.
Kiefer was born in Chicago, Illinois. He studied at the University of Texas at Austin.
In the 1960s, he worked with Mayor Richard J. Daley to build swimming-pools across the inner city of Chicago, providing the facilities needed for thousands of children to learn to swim.
Kiefer died on May 5, 2017 at his home in Wadsworth, Illinois at the age of 98.