Alan L. Hart
In 1948, after Hart obtained a master's degree in public health from Yale, the couple moved to Connecticut, where Hart had been appointed Director of Hospitalization and Rehabilitation for the Connecticut State Tuberculosis Commission. The couple lived for the rest of their lives in West Hartford, Connecticut, where Edna became a professor at the University of Hartford. After the Second World War synthetic testosterone became available in the US, and for the first time Hart was able to grow a beard and shave. He also developed a deeper voice, making him more confident and his public appearances easier.
H. L. A. Hart
During World War II, Hart worked with MI5, a division of British military intelligence concerned with unearthing spies who had penetrated Britain, where he renewed Oxford friendships including working with the philosophers Gilbert Ryle and Stuart Hampshire. He worked closely with Dick White, later head of MI5 and then of MI6. Hart worked at Bletchley Park and was a colleague of the mathematician and codebreaker Alan Turing.