Ultra Confidential correspondence, inward master tissues, Apr. 1954 - Apr. 1955. File no. 9.

Shell Australia Limited, Ultra Confidential correspondence, inward master tissues, Apr. 1954 - Apr. 1955. File no. 9. (1954-1955), [UMA-ITE-2008004501706]. University of Melbourne Archives, accessed 08/11/2025, https://archives.library.unimelb.edu.au/nodes/view/310095