Julian Auleytner : Local Lublin Issues in Postal Use: 1918 - 1919
in: POLONUS 577 - January 2020 Bulletin of the Polish Philatelic Society Benicia, CA 2020

# Lokalausgaben # Polen

Hans Vogels Jerzy W. Kupiec-Weglinski : Zeppelin Mail from Polish Post Office in Port Gdansk (1932 - 1936)
in: POLONUS 577 - January 2020 Bulletin of the Polish Philatelic Society Benicia, CA 2020

# Polen # Zeppelin # Danzig