Contract with Wilson & Pilkington for Australian mails, 1857-05-08 Unit ID: 96/156-58 Date: 1857-05-08
Contribution of R. Baker of South Australia to Australian mail packet arrangements, 1886-03-25 Unit ID: 167/83-86 Date: 1886-03-25
Contributions of Australian colonies to mail service, 1867-03-13 Unit ID: 126/261-63 Date: 1867-03-13