John O'Hara was an American author born on January 31, 1905, in Pottsville, Pennsylvania. He is best known for his novels and short stories that often explore the lives of the American upper class in the early to mid-20th century. His writing style is characterized by sharp dialogue and keen social observation. O'Hara gained significant recognition for works such as Appointment in Samarra and Butterfield 8, which reflect his experiences and insights into American society. Throughout his career, he published numerous short stories in prestigious magazines like The New Yorker, solidifying his reputation as a prominent literary figure of his time.