A.H.O. official telephone record Telephone lists for Head Office, London and Australian states

Shell Australia Limited, A.H.O. official telephone record Telephone lists for Head Office, London and Australian states (c. 1955), [UMA-ITE-2008004502500]. University of Melbourne Archives, accessed 13/09/2026, https://archives.library.unimelb.edu.au/nodes/view/310752