“’60 Years Later: Coming Through the Rye,’ by J. D. California, a 33-year-old humor writer from Sweden who uses that gimmicky nom de plume, might be read as an update of sorts to [J.D.] Salinger’s 1951 classic, ‘The Catcher in the Rye,’ which has sold more than 35 million copies. The new work centers on a 76-year-old ‘Mr. C,’ the creation of a writer named Mr. Salinger.”