An online encyclopedia of the stamps of Poland with explanations of all things depicted on the stamps, sheets and decorative labels of Poland; chronological listing
A 5-part annotated gallery inspired by a series of Polish stamps issued in the period 1986-2000 with portraits of Polish rulers. The portraits are based on paintings by the famous artist Jan Matejko (1838-1893).
A very interesting chronicle of WWII events as these pertain to Poland. The chronicle uses stamps of many nations to tell the story. For a more detail exploration of this site go to Info-poland's History page