Complaints of Australian Association about arrangements for Australian mails, 1854-01-23 Unit ID: 82/20 Date: 1854-01-23
Compliance of Australian colonies with Postal Union principles on payment of indemnity, 1892-02-25 Unit ID: 186/9-13 Date: 1892-02-25
Compliance of Australian colonies with Postal Union principles on payment of indemnity, 1892-03-01 Unit ID: 186/37-41 Date: 1892-03-01