HUMANITIES & SOCIAL SCIENCES LIBRARY / NEW YORK PUBLIC LIBRARY / SCIENCE PHOTO LIBRARY HUMANITIES & SOCIAL SCIENCES LIBRARY / NEW YORK PUBLIC LIBRARY / SCIENCE PHOTO LIBRARY
Marconi radio equipment on a trans-Atlantic liner. The key at lower right was used to tap out a signal in Morse code, which was transmitted by radio waves. Marconi patented his radio equipment in 1896, founding a company in 1897 to build the new equipment. Marconi's initial aim had been to allow communication with those at sea. He achieved the first trans-Atlantic radio signal in 1901. Photograph published in The March of Commerce (1927), volume 4 of The Pageant of America: A Pictorial History of the United States. This was a 15-volume series that commemorated 150 years since the founding of the USA in 1776.
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