Marilyn Johnson is an American writer and the author of the nonfiction books Lives in Ruins: Archaeologists and the Seductive Lure of Human Rubble ; This Book Is Overdue! How Librarians and Cybrarians Can Save Us All ; and The Dead Beat: Lost Souls, Lucky Stiffs, and the Perverse Pleasures of Obituaries —three professions that Johnson says “contribute immeasurably to our collective cultural memory,” and “are less a job than a passionate calling.” Publishers Weekly called Johnson “dangerously…