Professional Radio and Electronics Institute of Australasia2022-02-072022-02-07No Datehttp://hdl.handle.net/1885/25941725cm x 20cmphotographb&wimage/tiffen-AUProfessional Radio and Electronics Institute of Australasia2022-02-07This image is provided for research purposes only and must not be reproduced without the prior permission of the Archives Program, Australian National University