Science Museum, London.
Documentation from the Science Museum on file, regarding astronomical clock.
GV. clock. CU. sign 'perpetual calendar for Easter'. MS. Arthur Allan Lloyd and Geoffrey Buggins winding clock, CU. main movement, MS. clock. MS. movement, MS. dial of saturn speeded up to show approx. 2 years movement, in feet shot. MS. group of Peter Hayward and Buggins looking at photostat of original drawing by Dondi. MS. Photostat. MS. Dover clock type used in 1364.