Site of the first United States transatlantic wireless telegraph station built in 1901-1902. Marconi Wireless Telegraph Company of America predecessor of RCA transmitted January 19, 1903 the first U.S. transatlantic wireless telegram addressed to Edward VII King of England by Theodore Roosevelt President of the United States of America

Photo of Theodore Roosevelt, Guglielmo Marconi, and Edward VII brass plaque
dbking from Washington, DC on Wikimedia Commons
This is an approximate position

by Wellfleet Historical Society in 1953

Colour: brass

Wikimedia:

Flickr:

See also...
Photo of Theodore Roosevelt black plaque
Jpo tx113 on Wikimedia Commons
Photo of Guglielmo Marconi marble plaque
Eugene O'Loughlin on Flickr PD 1.0
Photo of Guglielmo Marconi gold plaque
Simply Jan on Flickr
Photo of Guglielmo Marconi gold plaque
Simply Jan on Flickr
Photo of Guglielmo Marconi, Wireless Telegraph Company Limited, and Nellie Melba bronze plaque
nick.harrisonfli on Flickr
Photo of Guglielmo Marconi blue plaque
Spudgun67 on Wikimedia Commons
Photo of Guglielmo Marconi grey plaque
Spudgun67 on Wikimedia Commons
Photo of Guglielmo Marconi blue plaque
Pete Reed on Flickr
Photo of Guglielmo Marconi blue plaque
rw_norris2000 on Flickr
Photo of Guglielmo Marconi and Nellie Melba blue plaque
cazphoto.co.uk on Flickr
Photo of Guglielmo Marconi brass plaque
blech​ on Flickr
Photo of George Kemp and Guglielmo Marconi blue plaque
Kay Atherton on Geograph
Photo of Wireless Telegraph Company Limited and Guglielmo Marconi blue plaque
Stuart Axe on Flickr
Photo of Madeira Hotel, Court Royal, and Guglielmo Marconi blue plaque
Alwyn Ladell on Flickr
Photo of Edward William Godwin, Edward VII, and Alexandra Caroline Marie Charlotte Louise Julia black plaque
nick.harrisonfli on Flickr
Photo of Edward VII bronze plaque
ell brown on Flickr
Photo of Edward VII, Lillie Langtry, and Langtry Manor Hotel  blue plaque
Alwyn Ladell on Flickr
Photo of Edward VII, Francis Greville, and Frances Evelyn "Daisy" Greville grey plaque
Simon Harriyott on Flickr
Photo of Edward VII blue plaque
Simon Harriyott on Flickr
Photo of Edward VII, John Wallis, and Jack (Kid) Berg blue plaque
Robin Drayton on Geograph
Photo of Guildhall, Lichfield, Victoria, and Edward VII stone plaque
ell brown on Flickr
Photo of Louise Sassoon, Arthur Abraham David Sassoon, and Edward VII blue plaque
Jez Nicholson on Flickr
Photo of Edward VII, Lillie Langtry, Thomas Rule, and Rules black plaque
marvinbarretto on Flickr
Photo of Edward VII blue plaque
John S Turner on Geograph
Photo of Haile Selassie, Winston Churchill, Edward VII, George V, and 1 other
Simon Harriyott on Flickr