Mel Campbell: Churchills Kater Nelson. In: crikey.com. 19. Mai 2010, abgerufen am 5. März 2023 (australisches Englisch).
nationalarchives.gov.uk
blog.nationalarchives.gov.uk
The cats at the heart of government | The National Archives Blog: "However, the second Peter was to have a tragically short tenure as the Home Office’s chief mouser. At 3.15am on 27 June 1947, Peter II was struck by a car while crossing the road from the Home Office to the Cenotaph. The RSPCA attended on the cat, but unfortunately advised that it was best for Peter to be put to sleep."