Lardner later published such stories as "Haircut", "Some Like Them Cold", "The Golden Honeymoon", "Alibi Ike", and "A Day with Conrad Green." He also continued to write follow-up stories to "You Know Me Al", with the protagonist of that book, the headstrong but gullible Jack Keefe, experiencing various ups and downs in his major league career and in his personal life. Private Keefe's World War I training camp letters home to his friend Al were collected in the book "Treat 'Em Rough: Letters From Jack the Kaiser Killer". The sequel, "The Real Dope", followed Keefe overseas to the trenches in France.