Celebrity Chelsea's Summer Vacation By People Staff Published on January 27, 1999 12:00 AM Share Tweet Pin Email Chelsea Clinton worked part of the summer as an intern at a Montana cattle ranch, weighing bulls and sorting breeding pairs, before being called home early following the disappearance of John F. Kennedy Jr. The N-Bar Ranch in central Montana has an intern program for college students interested in agriculture. Chelsea had taken a course in environmental economics at Stanford University. “She was a delight,” said ranch owner Susan Allred. “She just pitched right in and worked with everyone else.” Chelsea spent her time at the ranch helping move cattle, sorting pairs, weighing bulls, assisting with embryo transfers and collecting biocontrol insects.