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
Locust Grove (Samuel F. B. Morse House) Locust Grove (Samuel F. B. Morse House) Locust Grove is a National Historic Landmark estate located on US 9 in the Town of Poughkeepsie, New York. The 180-acre park-like estate includes homes, a carriage house, ice house, trails, a flower garden, and vegetable garden, and it overlooks the Hudson River from a bluff. The property includes a home designed by architect Alexander Jackson Davis for Samuel F. B. Morse, the inventor of the telegraph. An Italianate style mansion, it was completed in 1851. The estate is open to the public, tours are offered, and the site is used for weddings