Zeppelin Flights. 1925 (July 4), Airship (Z.R.1) Shenandoah, Governors' Conference Flight, cover sent from USS Patoka to Lakehurst, franked by Washington 2c carmine, circular ''via Air Mail Service USS Shenandoah'' in violet and two-line ''by U.S. Navy Dirigible ''Shenandoah'' in black, next day Lakehurst arrival on reverse, Michel #2, €750, Frost #ZR1-Bb, C.v. $1,000 (Image)

Zeppelin Flights. 1925 (July 4), Airship (Z.R.1) Shenandoah, Governors' Conference Flight, cover sent from Bay Harbor to Lakehurst, franked by Norse-American 2c carmine and black, tied by machine postmark with inverted ''4'', USS Patoka ds, circular ''via Air Mail Service USS Shenandoah'' and two-line ''Via Air Mail by Navy Dirigible'' confirmation markings, Lakehurst ''JUL.5.1925'' arrival on reverse, Michel #2, €750, Frost #ZR1-Bb, C.v. $1,000 (Image)

Zeppelin Flights. 1925, Airship (Z.R.3) Los Angeles Direct and Return Flights to Puerto Rico, five covers, one for direct and four different for return flight, cancelled at San Juan or Mayaguez, bearing different types of confirmation markings, in addition two covers delivered by Graf Zeppelin on different legs of Around the World Flight of 1929, arranged on pages from a Collection, mostly VF, Sieger #20U, T, V, W, 28-29, C.v. €1,100 (Image)

Zeppelin Flights. 1925 (June 6), Airship (Z.R.3) Los Angeles Flight Lakehurst to Minneapolis, cover franked by Norse- American 2c red and black, tied by appropriate Lakehurst machine marking, ''U.S.S. Los Angeles'' confirmation in black, five-lines arrival ''JUN 12. 8.10PM.1925'' date stamp, VF and rare, US Navy Airships did not deliver mail with just a few exceptions, Sieger #20X, C.v. €650 (Image)