Editor’s Note: Taiwanese American Peter Tsai has been in the news a lot lately as “the man behind the mask.”  “The retired inventor of N95 masks is back at work to fight Covid-19,” reads a Washington Post headline; “scientist-inventor a humble national hero,” another news agency chirps. But the depth and vibrance of Tsai’s living legacy is best known by his two daughters, who have not only borne witness to the N95 mask’s far-reaching impact during a global pandemic, but…

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