1935 25 CENT China Clipper Airmail FDC C20 $19.95 - PicClick
Romance of the Clippers
Air Mail, Back of Book, United States, Stamps - PicClick
China Clipper - Wikipedia
1935-1937 China Clippers #C20-C22 - Airmail Stamps - USA
C115 - 1985 44c Transpacific - Mystic Stamp Company
Daniel F. Kelleher Auctions, LLC Sale - 767 Page 7
1985 44c Transpacific Airmail, China Clipper Scott C115 Mint F/VF NH
USA 1985 Sc#C115, SG#A2144 44c Trans Pacific Air Mail 1935 USED
C115 - 1985 44c Transpacific - Mystic Stamp Company
Air Mail, Back of Book, United States, Stamps - PicClick
STAMPS; CHINA CLIPPER - The New York Times
China Clipper - Wikipedia