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
Robert Quackenbush Robert Quackenbush Robert Mead Quackenbush (born July 23, 1929) is an American author and illustrator of children's books. As of 1999, he had authored 110 books and illustrated 60 more. He has written about many historical figures, such as "Quick, Anne, Give Me a Catchy Line", a children's book about the life and works of Samuel F. B. Morse (inventor of the telegraph), and "Mark Twain? What Kind of Name Is That? : a story of Samuel Langhorne Clemens", published in 1984. His most widely known book, "Henry's Awful Mistake", published by Parents Magazine Press in 1980, is present in