Anyone else might have easily written off a life of Véra Nabokov as impossible. In the two major biographies of her husband—both written during her lifetime, when she controlled access to his papers—she is a cipher. 

“75 at 75,” a special project from the 92nd Street Y in celebration of the Unterberg Poetry Center’s seventy-fifth anniversary, invites contemporary authors to listen to a recording from the Poetry Center’s archive and write a personal r…