 War memorials include those commemorating the First Anglo-Afghan War (1841–42), the First World War (1914–18), and the Second World War (1939–45).The most recent memorial was installed in 1958 to commemorate Isaac Pitman, the developer of Pitman shorthand, who died in 1897.The first mention of an organ in the abbey dates to 1634, but nothing is known of that instrument.