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Transsexual Roberta Cowell (1918 - 2011, left), formerly Robert Cowell, at a restaurant, March 1954. Roberta was once a Spitfire pilot, prisoner of war, racing motorist, husband and father of two, but has become a woman following hormone treatment and surgery. She was the first known British transsexual woman to undergo sex reassignment surgery. Original Publication: Picture Post - 7078 - Roberta Cowell's Own Story - 3: My Years of Crisis - pub. March 1954 (Photo by Maurice Ambler/Picture Post/Hulton Archive/Getty Images)

Transsexual Roberta Cowell (1918 - 2011, left), formerly Robert Cowell, at a restaurant, March 1954. Roberta was once a Spitfire pilot, prisoner of war, racing motorist, husband and father of two, but has become a woman following hormone treatment and surgery. She was the first known British transsexual woman to undergo sex reassignment surgery. Original Publication: Picture Post - 7078 - Roberta Cowell's Own Story - 3: My Years of Crisis - pub. March 1954 (Photo by Maurice Ambler/Picture Post/Hulton Archive/Getty Images)
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Picture Post Maurice Ambler

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1959: Teenagers kiss and dance the night away at the third all night 'Carnival of Jazz' at London's Royal Albert Hall. (Photo by Keystone/Getty Images)

1959: Teenagers kiss and dance the night away at the third all night 'Carnival of Jazz' at London's Royal Albert Hall. (Photo by Keystone/Getty Images)
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Hulton Archive Keystone

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Portrait of Christine Jorgensen (1926-1989), former American GI and transgender woman who is the first person to be widely known for having undergone sex reassignment surgery, pictured pictured wearing a tulle bouffant skirt at her Mayfair hotel in London, August 8th 1954. (Photo by Paul Popper/Popperfoto via Getty Images/Getty Images)

Portrait of Christine Jorgensen (1926-1989), former American GI and transgender woman who is the first person to be widely known for having undergone sex reassignment surgery, pictured pictured wearing a tulle bouffant skirt at her Mayfair hotel in London, August 8th 1954. (Photo by Paul Popper/Popperfoto via Getty Images/Getty Images)
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Popperfoto Paul Popper/Popperfoto

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American sexuality researcher Alfred Kinsey sits with his staff members from the Indiana University Institute for Sex Research on the steps of Wylie Hall, Bloomington, Indiana, August 18, 1953. Front (L-R): Cornelia Christenson, Mrs. Hedwig Leser, Clyde Martin. Rear (L-R): Jean Brown, Paul Gebhard, William Dellenback, Kinsey, Wardell Pomeroy, Ritchie Davis, Eleanor Roehr, Dorothy Collins.

American sexuality researcher Alfred Kinsey sits with his staff members from the Indiana University Institute for Sex Research on the steps of Wylie Hall, Bloomington, Indiana, August 18, 1953. Front (L-R): Cornelia Christenson, Mrs. Hedwig Leser, Clyde Martin. Rear (L-R): Jean Brown, Paul Gebhard, William Dellenback, Kinsey, Wardell Pomeroy, Ritchie Davis, Eleanor Roehr, Dorothy Collins.
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