Literature

Journals:

AerogrammeR. The International Philatelic Society of Aerogramme and Airletter Sheet Collectors. Quarterly

l"Entier Postal. l'Association des Collectionneurs d'Entiers Postaux. Quarterly.

Die Ganzsache. Berliner Ganzsachen Sammler Verein. Quarterly.

Der Ganzsachensammler. Schweizerischer Ganzsachen Sammer Verein.

The P. S. Journal. Postal Stationery Society. 3 times a year.

Postal Stationery. United Postal Stationery Society. 6 times a year

Postal Stationery Collector. Postal Stationery Society of Australia. Quarterly..

Postal Stationery Notes. BNAPS Postal Stationery Study Group. 6 times a year.

Robert Samuel's Postal Stationery Newsletter. Robert Samuel. Monthly.