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Ed Ricketts

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 coauthored book, Sea of Cortez (December 1941), 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 found an audience and did not sell well. However, in 1951, Steinbeck republished the narrative portion of the book as The Log from the Sea of Cortez, under his name only (though Ricketts had written some of it). This work remains in print today.

Although Carol accompanied Steinbeck on the trip, their marriage was beginning to suffer, and ended a year later, in 1941, even as Steinbeck worked on the manuscript for the book. In 1942, after his divorce from Carol he married Gwyndolyn "Gwyn" Conger.

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's biographer Eric Enno Tamm opined that, except for East of Eden (1952), Steinbeck's writing declined after Ricketts's untimely death in 1948.