Original Marconi radio apparatus. Marconi built and experimented with his first radio equipment in Italy in 1894. He then moved to London, England, patented his invention in 1896, and then worked to develop the technology worldwide. The antenna is at centre left. The receiver and tapper are at centre. The telephone listening device used by Marconi is at centre right. Photograph courtesy of the Radio Corporation of America, New York, USA, formed in 1920 from the American Marconi Company. Published in The March of Commerce (1927), volume 4 of The Pageant of America: A Pictorial History of the United States, 15 volumes commemorating 150 years since the founding of the USA in 1776.