Through the Gates of the Silver Key

Howard Phillips "H. P." Lovecraft (August 20, 1890 – March 15, 1937) was an American author who achieved posthumous fame through his influential works of horror fiction. Virtually unknown and only published in pulp magazines before he died in poverty, he is now widely seen as one of the most significant 20th century authors in his genre.
Excerpt-It must have been these whispers plus Carter's own statement to Parks and others that the queerly arabesqued silver key would help him unlock the gates of his lost boyhood - which caused a number of mystical students to declare that the missing man had actually doubled back on the trail of time and returned through forty-five years to that other October day in 1883 when he had stayed in the Snake Den as a small boy. When he came out that night, they argued, he had somehow made the whole trip to 1928 and back; for did he not thereafter know of things which were to happen later? And yet he had never spoken of anything to happen after 1928.