A

    • Abu Dhabi
    • Aden
    • Afghanistan
    • Aitutaki
    • Ajman
    • Aland Islands
    • Alaouites
    • Albania
    • Alderney
    • Alexandria
    • Algeria
    • Allenstein
    • Alsace and Lorraine
    • Alwar
    • Andorra-French
    • Andorra-Spanish
    • Angola
    • Anguilla
    • Anjouan
    • Annam and Tongking
    • Antigua
    • Antioquia
    • Argentina
    • Armenia
    • Aruba
    • Ascension
    • Australia – B.C.O.F
    • Australia
    • Australian Antarctic Territory
    • Australian Territories Acquired by Italy
    • Austro-Hungarian Military Post – General
    • Austro-Hungarian Military Post – Italy
    • Austro-Hungarian Military Post – Montenegro
    • Austro-Hungarian Military Post – Rumania
    • Austro-Hungarian Military Post – Serbia
    • Austro-Hungarian PO in the Turkish Empire – French
    • Austro-Hungarian PO in the Turkish Empire – Lombardy
    • Austro-Hungarian PO in the Turkish Empire – Turkish
    • Azerbaijan
    • Azores