Three documents related to Barnes Wallis' CBE certificate:

- One typed letter dated 22 May 1943, written on 10 Downing Street headed note paper and addressed to B N Wallis Esq. The letter informs Barnes Wallis that the Prime Minister intends to submit his name to the King to be appointed a Commander of the Order of the British Empire (CBE). The letter is signed Anthony Bevin

- One typed note on 10 Downing Street headed notepaper from the Prime Minister's Private Scretary, requesting details of Barnes Wallis' correct name and address

- One typed letter from the Central Chancery of The Orders of Knighthood, addressed to Barnes Neville Wallis, Esq., C.B.E, M. Inst. C.E., F.R.Ae.S. The letter transmits a Warrant of Appoint to the Most Excellent Order of the British Empire to Barnes Wallis