* The Grapes of Wrath: This novel, published in 1939, is often considered Steinbeck's masterpiece and a cornerstone of American literature. It tells the story of the Joad family, forced to migrate from Oklahoma to California during the Dust Bowl. The novel is known for its powerful portrayal of poverty, social injustice, and the resilience of the human spirit. It won the National Book Award and the Pulitzer Prize, and it has been adapted for film and stage numerous times.
* Of Mice and Men: This novella, published in 1937, is another classic of American literature. It tells the story of George Milton and Lennie Small, two migrant workers who dream of owning their own farm. The novella is known for its simple yet profound exploration of friendship, loneliness, and the American Dream. It has been widely read and adapted for film, stage, and television.
* East of Eden: This epic novel, published in 1952, is a sprawling family saga that traces the history of the Trask family from the American Civil War to the early 20th century. The novel is known for its complex characters, its exploration of good and evil, and its philosophical insights. Some critics consider it Steinbeck's most ambitious and rewarding work.
Other notable works by Steinbeck that have been widely acclaimed include:
* Tortilla Flat: This novel, published in 1935, tells the story of a group of paisanos living in Monterey, California. It is known for its charming humor, its colorful characters, and its celebration of the "good life."
* The Pearl: This novella, published in 1947, tells the story of a poor fisherman who finds a giant pearl. It is a simple yet powerful story about greed, hope, and the human condition.
* The Red Pony: This novella, published in 1933, is a coming-of-age story about a young boy growing up on a ranch in California. It is known for its lyrical prose, its poignant portrayal of childhood, and its exploration of the bond between humans and animals.
Ultimately, the "biggest triumph" is subjective and depends on the individual reader's preferences. Each of these works offers a unique and valuable contribution to American literature.