The cycle of American literature by Robert E Spiller 1956 6th Printing Paperback | eBay
The Antarktos Cycle: At the Mountains of Madness and other chilling tales (Call of Cthulhu Fiction): Robert, M. Price, Robert M. Price: 9781568822044: Amazon.com: Books
Robert M. Pirsig Quote: “The real cycle you're working on is a cycle called yourself.”