A record of postal history organised alphabetically by all authorities that have issued stamps since 1840.
There are 4 levels: this home page links to a 2nd level of 24 index pages (see A-Z below); the 3rd level contains some 1550 micro entries with key info about every postal authority in summary form; the 4th level has macro entries about individual authorities.
Click here to read more about this site and click here for a bibliography of sources and recommended reading.