the organ, and it was subsequently restored by Quimby Pipe Organs, Inc., of Warrensburg, Missouri. After two years of extensive and detailed refurbishment work, including a reorganization of many pipes and a rebuilding of the console, the organ finally returned to service in 2008 as part of an overall $41-million cleaning and repair to the cathedral. The Great Organ was damaged again in the April 2019 crypt fire, and was indefinitely placed out of service pending a thorough cleaning. While the Great Organ was being restored, the Cathedral of St. John the Divine used an electric organ. The organists have included: Walter Henry Hall (1905–1909) Miles Farrow (1910–1931) Norman Coke-Jephcott (1932–1953) John Upham (interim) (1953–1954) Alec Wyton (1954–1974) David Pizzaro (1974–1977) Paul Halley (1977–1990) Dorothy Papadakos (1990–2003) Timothy Brumfield (2003–2009) Bruce Neswick (2009–2011) Kent Tritle (2011–present) Sanctuary Behind the choir, to its east, is the sanctuary (or chancel), a raised platform. The chancel includes the high altar, which is made of white Vermont marble. The Magna Carta Pedestal—named as such because it is located atop three stones from the Bury St Edmunds Abbey in England—is located to the right, while the sedilia for the bishop and other clergy is to the left. The sanctuary also contains the cathedra (or bishop's seat), donated by Olivia Egleston Phelps Stokes in memory of her sister Caroline Phelps Stokes. The bishop's pulpit is made of Tennessee marble, with five niches, each of which contain reliefs that depict scenes from the life of Christ. A presbytery, which houses the officiating clergy of St. John's, is located between the chancel and the choir. The reredos behind the sanctuary depicts four scenes from the Old Testament on the left (north), and four from the New Testament on the right (south). Behind the altar is a wrought iron enclosure. The space contains the English Gothic style tomb of the man who originally conceived and founded the cathedral, the Right Reverend Horatio Potter, which was dedicated in 1921. Ambulatory and chapels An ambulatory, measuring long and wide, surrounds the choir to the north, east, and south, making a rough "U" shape with the two ends of the "U" facing west. The floor is covered with red clay-colored tiles that contain green-serpentine borders. There are wrought-steel gates at either end of the ambulatory. Numerous plaques are present in the ambulatory, paying homage to large donors and other notable individuals in