Catapult Flights
U.S. 5c Roosevelt and 10c Monroe Fourth Bureau on 5c Monoplane Air Envelope 1929 New York, N.Y. Grand Central Annex Airmail via S.S. Bremen Catapult to Locarno, Switzerland. Graue-Leder K-2a.
Germany 5pf Hindenburg and 50pf Eagle Air Issue 1931 Deutches-Amerikansche-Seepost Bremen-New York D. Bremen Printed matter Airmail via S.S. Bremen Catapult to Paterson, N.J. Graue-Leder K-60d.