Charles Benedict Calvert telegraph, Samuel Morse and Alfred Vail. On April 9, 1844, Morse and Vail successfully tested their device by transmitting a message from the nation's capital to the Calvert home, Riversdale. This test came 45 days before the more celebrated event when Morse sent the message "What hath God wrought?" from Washington to Baltimore, along telegraph lines that ran above the Baltimore and Ohio Railroad line near Riversdale. Calvert became president of the Prince George's County, Maryland Agricultural Society and the Maryland State Agricultural Society, and served as vice president of the United States Pomological Society. He founded the first agricultural
Short C-23 Sherpa shifted the center of gravity sufficiently (later calculations determined that the aircraft had been loaded outside its operating envelope at the start of the flight) that the airplane became unstable when a patch of severe turbulence was encountered. The violent g-force shifts then encountered rendered the crew unconscious and caused the breakup of the aircraft in flight near Unadilla, Georgia, killing the 21 persons on board. Former USAF and US Army aircraft have been sold to civil operators including: Short C-23 Sherpa The Short C-23 Sherpa is a small military transport aircraft built by Short Brothers. The "C-23A" and "C-23B"