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Bugle Megaphone, Fort Totten, 3 Jul 1917. Creator: Bain News ServiceBugle Megaphone, Fort Totten, 3 Jul 1917 (date created or published later). A soldier using a bugle megaphone at Fort Totten, Queens, New York City during World War I.
John Nevil Maskelyne performs a spirit cabinet illusion, c1910. Creator: UnknownJohn Nevil Maskelyne performs a spirit cabinet illusion, c1910. How the tricks are performed - " A coach-horn or megaphone is useful for picking things up
Langley Laboratory annual picnic, Buckroe Beach, Hampton, Virginia, USA, July 1, 1929. On the barrel to the left is Ray Sharp
Speaking Trumpet, c. 1938. Creator: Samuel O. KleinSpeaking Trumpet, c. 1938
Boat in a Storm at Sea, 1784-88. Creator: Thomas RowlandsonBoat in a Storm at Sea, 1784-88
Anti-aircraft device, First World War, 1914-1918, (c1920). Creator: UnknownAnti-aircraft device, First World War, 1914-1918, (c1920). The War against German Aircraft: a " Listening Post" in the French anti-aircraft Section
Various musical instruments and sounds, Wurtemberg, c1850. Key: 1) Condensed and rarified sound waves: 2) Echoes: 4) Megaphone: 5) Ear trumpet: 6) Speaking tube: 7) The Ear: 10-20) Musical instruments