Vegemite inventor Cyril Callister was an alumni of the Ballarat School of Mines, a predecessor institution of Federation University Australia. Working from the details of a James L. Kraft patent, Callister was successful in producing processed cheese. The Walker Company negotiated a deal for the rights to manufacture the product, and in 1926, the Kraft Walker Cheese Co. was established. Callister was appointed chief scientist and production superintendent of the new company.(Wikipedia)Correspondence from Cyril Callister on Kraft Walker Cheese Co letterhead. The letter was concerning donating to the Ballarat School of Mines prize fund and was signed by Cyril Callister. Kraft Walker Cheese Company Propriety Limited Vaughan House 108 Queen Street Melbourne 9th March, 1949 R.W. Richards, Esq., Principal, The School of Mines and Industries, BALLARAT, VIC. Dear Sir, In reply to your letter of the 7th inst. I have pleasure in enclosing a cheque for two guineas as contribution towards your prize fund. I would be pleased to take advantage of your offer to look round the school some time when I am in Ballarat. Wishing you continued success, Yours faithfully Hraft Walker Cheese Co, Pty. Ltd. C.P Callister (signed) C.P. Callister Register Encl.vegemite, cyril callister, kraft walker, letterhead, ballarat school of mines prize night, alumni, c.p. callister, kraft walker cheese company, donation