Aerogramme addressed to T. Pearcey, C/o Australian Scientific Liaison Office, Africa House Kingsway, London W1, Great Britain. Dated 16 July 1965.

Dr Pearcey was a pioneer in the field of electronic computing in Australia. He designed the computer CSIR Mark 1, later known as CSIRAC, while working for the Commonwealth Council for Scientific and Industrial Research (CSIR) in Sydney in the 1940s. He also held a variety of academic positions in computing.

CSIRAC was built by the CSIR in Sydney in 1949 and was the fourth computer in the world. It was later transferred to the University of Melbourne. Designed by Trevor Pearcey and engineered by Maston Beard, CSIRAC completed more than 1000 projects by the time it was turned off in 1964. It is currently housed at Museum Victoria.

Physical Description

Aerogramme printed in navy blue and red ink on pale blue paper folded in quarters. Letter handwritten in blue ink pen inside. Handwritten address and black ink post mark on the front. Housed in a printed brown envelope, with a typewritten address on the front.

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