Marvel first licensed two prose novels to Bantam Books, who printed The Avengers Battle the Earth Wrecker by Otto Binder (1967) and Captain America: The Great Gold Steal by Ted White (1968). Various publishers took up the licenses from 1978 to 2002. Also, with the various licensed films being released beginning in 1997, various publishers put out movie novelizations. In 2003, following publication of the prose young adult novel Mary Jane, starring Mary Jane Watson from the Spider-Man mythos, Marvel announced the formation of the publishing imprint Marvel Press. However, Marvel moved back to licensing with Pocket Books from 2005 to 2008. With few books issued under the imprint, Marvel and Disney Books Group relaunched Marvel Press in 2011 with the Marvel Origin Storybooks line.
How many books did Marvel license with Pocket Books?