Among the most complex of the installations was the effort to mount a large-scale drawing that was a preliminary study for a fresco in the Vatican’s Pauline Chapel. The work arrived inside a metal case weighing 650 pounds, and required not only a forklift to install it securely, but also scissor lifts and 40 people to help with the task. Marcello Venusti’s famous copy of Michelangelo’s Last Judgment was even heavier, weighing in at 750 pounds.