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 John Steinbeck IV (1946–1991). Ricketts was Steinbeck's model for the character of "Doc" in "Cannery Row" (1945) and "Sweet Thursday" (1954), "Friend Ed" in "Burning Bright", and characters in "In Dubious Battle" (1936) and "The Grapes of Wrath" (1939). Ecological themes recur in Steinbeck's novels of the period. Steinbeck's close relations with Ricketts ended in 1941 when Steinbeck moved away from Pacific Grove and divorced his wife Carol. Ricketts' biographer Eric Enno Tamm notes that, except for "East of Eden" (1952), Steinbeck's writing declined after Ricketts' untimely death in 1948. Steinbeck's novel "The Moon Is Down" (1942), about the Socrates-inspired