GERMANY (1951) Balloon*. Zeppelin*. Postal card (O) with Bremen balloon post cancel and illustration of zeppelin flying over countryside.
AVAILABLE AT $15
GERMANY (1952) Zeppelin*. Postal stationery envelope (O) with illustrated ad celebrating 40 years of Deutsche Luftpost.
AVAILABLE AT $12
AUSTRIA (1957) Balloon*. Baby with binky*. Postal stationery envelope (O) with balloon post cancel and corner illustration of infant.
AVAILABLE AT $40
RUSSIA (1961) Balloons*. Illustrated postal stationery (N) for May 1 celebration.
AVAILABLE AT $10
RUSSIA (1965) Balloons*. Flags*. Illustrated entire (N).
AVAILABLE AT $10
GERMANY (Berlin) (1980) Balloon*. Postal card with illustration of Dan-Air goodwill tour balloon.
AVAILABLE AT $12