In September 1935, Kennedy made his first trip abroad when he traveled to London with his parents and his sister Kathleen. He intended to study under Harold Laski at the London School of Economics (LSE), as his older brother had done. Ill-health forced his return to the United States in October of that year, when he enrolled late and attended Princeton University but had to leave after two months due to a gastrointestinal illness. He was then hospitalized for observation at Peter Bent Brigham Hospital in Boston. He convalesced further at the family winter home in Palm Beach, then spent the spring of 1936 working as a ranch hand on the Jay Six cattle ranch outside Benson, Arizona. It is reported that ranchman Jack Speiden worked both brothers "very hard".