
While gatefold mechanisms were already used in the 1100s, one of the first movable paper mechanisms was a volvelle created by Benedictine Monk Matthew Paris to calculate the dates of Christian holidays in his book Chronica Majorca (1236-1253, see left image above). Volvelles are paper discs or rings placed on top of each other that rotate around a string or rivet. Many other types of paper […]