Flying

Bu kavram başka kaynaklarda da geçiyor

• French-English and English-French Commercial Dictionary (1918)
• Everybody's Encyelopedia (1912)
• A Dictionary of Aviation (1911)
• The Handy Cyclopedia of Common Things and Biographical Dictionary (1901)
• Pears Shilling Cyclopedia (1898)
• A Dictionary of Musical Terms (1895)
• Zell's Condensed Dictionary (1879)
• Dictionary of Science, Literature and Art (1854)
• Dictionary of Science, Literature and Art (1842)
• FLYING-PHALANGER — British Encyclopedia (1933)
• FLYING-SQUIRREL — British Encyclopedia (1933)
• FLYING SQUIRREL — Adair's New Encyclopedia (1923)
• KITE-FLYING — Adair's New Encyclopedia (1923)
• Pigeon-flying — The Slang Dictionary Etymological Historical and Anecdotal (1913)
• Flying Dragon — Everybody's Encyelopedia (1912)