John Steinbeck allowing Steinbeck to spend a full day on the set of "The Grapes of Wrath" and the next day on the set of "Of Mice and Men." In the 1930s and 1940s, Ed Ricketts strongly influenced Steinbeck's writing. Steinbeck frequently took small trips with Ricketts along the California coast to give himself time off from his writing and to collect biological specimens, which Ricketts sold for a living. Their joint book about a collecting expedition to the Gulf of California in 1940, which was part travelogue and part natural history, published just as the U.S. entered World War II, never
John Steinbeck banned the book from the county's publicly funded schools and libraries. It was burned in Salinas on two different occasions. In 2003, a school board in Mississippi banned it on the grounds of profanity. According to the American Library Association Steinbeck was one of the ten most frequently banned authors from 1990 to 2004, with "Of Mice and Men" ranking sixth out of 100 such books in the United States. The award of the 1962 Nobel Prize for Literature to Steinbeck was controversial in the United States. The award citation lauded Steinbeck "for his realistic and imaginative writings, combining as