English: Three panel flown "triptych" cover carried around the world (New York-Shediac-Botwood-Foynes-Southampton-Cairo-Karachi-Singapore-Hong Kong-Manila-Guam-Wake I.-Midway I.-Honolulu-San Francisco-New York) via PAA (Boeing 314 Clipper) and Imperial Airways (Short S23) including FAM 18 (Northern Route) First Flight, June 24 - July 28, 1939
来源
The Cooper Collections of Aeronautical Postal History
This United States postage stamp was published prior to 1978 and is therefore in the public domain in the United States. See Commons:Hirtle chart for further explanation. Note that it may still be copyrighted in jurisdictions that do not apply the rule of the shorter term for US works (depending on the date of the author's death), such as Canada (70 p.m.a.), Mainland China (50 p.m.a., not Hong Kong or Macao), Germany (70 p.m.a.), Mexico (100 p.m.a.), Switzerland (70 p.m.a.), and other countries with individual treaties.
2008-05-25 08:58 Centpacrr 650×1100× (431528 bytes) Three panel flown cover carried around the world (New York-Shediac-Botwood-Foynes-Southampton-Cairo-Karachi-Singapore-Hong Kong-Manila-Guam-Wake I.-Midway I.-Honolulu-San Francisco-New York) via PAA (Boeing 314 Clipper) and Imperial Airways (Short S23) in
{{BotMoveToCommons|en.wikipedia|year={{subst:CURRENTYEAR}}|month={{subst:CURRENTMONTHNAME}}|day={{subst:CURRENTDAY}}}} {{Information |Description={{en|Three panel flown cover carried around the world (New York-Shediac-Botwood-Foynes-Southampton-Cairo-Kar