EditorialMark Forgy, the caretaker of the art forger Elmyr de Hory’s legacy, stands between two authentic portraits by de Hory, left, “Self-Portrait,” circa 1973, and, right, “Portrait of Mark Forgy,” 1972, on view at the Hillstrom Museum of Art in St. Peter, Minn., on Feb. 16, 2020. (Jenn Ackerman/The New York Times)