>From an Australian perspective........ I have in my posession a copy of my Scottish great aunt's passport dated 1920 (from memory) for her emigration to Sydney Australia remembering it was under the Commonwealth as per Canada. Today's passports may look very different, but some of the key changes are less obvious at first glance: the 'X' series passport issued in 1917 is one of the earliest passports. It was during World War I that monitoring and identifying those crossing international borders became critical to the security of Australia and its allies; the War Precautions Act 1914-15 required that all persons over 16 years of age, on leaving the Commonwealth, possess a passport; in 1949 two types of passport were issued: B Series passports were issued (within Australia only) to British subjects who were not Australian citizens. C Series passports were issued only to Australian citizens. before 1983, a married woman's passport application had to be authorised by her husband; in 1984, Australian passports included machine readable lines and were the first to have a laminate built into the document; in 1986, the introduction of Single Identity passports meant children could no longer be included on their parent's passport; until 1988, a woman could apply for and receive a passport in her married name, before she was actually married. Regards Jenny