Bladensburg in Prince George's County, Maryland — The American Northeast (Mid-Atlantic)
The First Telegraph Line (1844)
One of the first tests of the unfinished line occurred just north of Bladensburg near Riversdale, the estate of Charles B. Calvert.
Text in lower-left box: National Intelligencer, Washington, Wednesday, April 10, 1844. The Magnetic Telegraph. Considerable progress has been made in the construction of the Magnetic Telegraph, the invention of Professor S. F. B. Morse, upon which a test experiment is being made under the authority of an act of Congress. The line of conductors is constructed as far on from Washington to a point on the line of the rairoad opposite to the residence of C. B. Calvert, Esq., (six miles,) and the work is making progress at the rate of about a mile a day. A trial of it was made yesterday, as the cars passed Mr. Calvert's by communicating the fact of their passage to the point at which the line begin in Washington, and an answer, acknowledging the receipt of the intelligence, was received back in two or three seconds.
Text with upper right photo: Samuel F. B. Morse. Courtesy of the Library of Congress, Prints and Photographs Division.
Text with lower right photo: Morse's 1837 telegraph instrument. Courtesy of the Library of Congress, Prints and Photographs Division.
Location. 38° 56.077′ N, 76° 56.294′ W. Marker is in Bladensburg, Maryland, in Prince George's County. Marker can be reached from the intersection of Annapolis Road (Maryland Route 450) and 46th Street. Touch for map. Marker is in Bladensburg Waterfront Park, .2 miles south of the entrance at this intersection. Marker is in this post office area: Bladensburg MD 20710, United States of America.
Other nearby markers. At least 8 other markers are within walking distance of this marker. Colonial Ropemaking (a few steps from this marker); Joshua Barney's Barge and the Chesapeake Flotilla (within shouting distance of this marker); Bladensburg Floods (1742-1954) (within shouting distance of this marker); Encampment of Coxey's Army (1894) (within shouting distance of this marker); The Incidental Cause of the Star-Spangled Banner (1814) (within shouting distance Duels and the Bladensburg Dueling Grounds (within shouting distance of this marker); Dinosaur Alley (within shouting distance of this marker); Clearing the Way to Washington (about 300 feet away, measured in a direct line). Touch for a list and map of all markers in Bladensburg.
More about this marker. Riversdale, the location where the test was made, is about 2 miles north of the Bladensburg Waterfront Park.
Also see . . . Bladensburg Waterfront Park. (Submitted on March 9, 2008, by F. Robby of Baltimore, Maryland.)
Categories. • Communications •
Credits. This page was last revised on June 16, 2016. This page originally submitted on March 9, 2008, by F. Robby of Baltimore, Maryland. This page has been viewed 7,986 times since then and 10 times this year. Photos: 1. submitted on March 9, 2008, by F. Robby of Baltimore, Maryland. 2. submitted on July 18, 2010, by Craig Swain of Leesburg, Virginia. 3. submitted on March 9, 2008, by F. Robby of Baltimore, Maryland. 4, 5, 6, 7, 8, 9. submitted on September 8, 2013, by Allen C. Browne of Silver Spring, Maryland.