Kathy Hourigan, managing editor at Knopf, holds a photograph of herself from the 1970s, in her office at the Knopf headquarters in New York, Oct. 12, 2018. Hourigan, 77, celebrated her 55th anniversary at Knopf, making her the longest-tenured employee in its history, a legend within the confines of one office. (Daniel Dorsa/The New York Times)