Copy letter from Robert William Frederick Harrison, to H J Read On 18 March an account was sent to them from the Lister Institute for animals and cages supplied to Sir David Bruce for the Nyasaland [Malawi] Commission with a request that it might be put forward for payment. Unfortunately a copy of that account was not kept, and so Harrison asks if it would be too much trouble to send a note of the date and the amount of the account. 12 June 1913