...The drawcard for Yuasa in Paris was Marie Curie's daughter, Irène Joliot-Curie & her husband Frédéric. Yuasa was inspired by their papers on artificial radioactivity.
More about Irène: https://en.wikipedia.org/wiki/Ir%C3%A8ne_Joliot-Curie
Here's Toshiko & Irène at the Joliot-Curie home in 1941...
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