New York Sun, April 8, 1906, page 5:
 

Transatlantic  Wireless

American  De  Forest
Wireless  Telegraph  Company

A N N O U N C E M E N T

Cork, Ireland, April 6, 1906.        
Abraham White, President
     American De Forest Wireless Telegraph Co.
42 Broadway, New York,        
      MESSAGES    BEING    RECEIVED    CLEARLY
TRANSATLANTIC   WIRELESS   NOW   ASSURED.
DE  FOREST.      


    On behalf of the American De Forest Wireless Telegraph Company I wish to announce the successful transmission of aerographic communication across the Atlantic Ocean direct, without a single relay, from the Manhattan Beach wireless station employing 40 kilowatts watts (30,000 volts of electricity) at the rate of 20 words per minute, to a point on the other side of the Atlantic in Glengarriff Harbour, County of Cork, Ireland, where Dr. Lee De Forest, the young American inventor of wireless telegraphy, received accurately and clearly the messages recently aerographed to him. The following confirmation from Dr. Lee De Forest was received by me on April 6 from Dr. Lee De Forest--"MESSAGES  BEING  READ  CLEARLY.  TRANSATLANTIC  WIRELESS  NOW  ASSURED."
    Dr. Alexander Graham Bell, the distinguished inventor of the telephone, has cooperated with us in this great work, having sent a representative to England with Dr. Lee De Forest for the purpose of conducting experiments with his tetrahedral kites in connection with
      the De Forest Wireless Telegraphy system, the kites being elevated and used instead of the ordinary masts. The kites were originally intended for practically exclusive use in connection with aerial navigation, but have been found to be exceedingly useful and valuable for wireless work, as was recently demonstrated also at Dr. Bell's laboratory in Virginia, when wireless message were received from distant points. Dr. Alexander Graham Bell is now in England and is cooperating with us in this work. The De Forest wireless system now holds the world's wireless record in both overland and marine transmission. Its work for the United States Government, President Roosevelt, during his memorable trip from New Orleans to Washington on the United States battleship West Virginia; the Standard Oil Company whose oil carrying steamers employ the De Forest system exclusively, and the many steamship lines using this system is a matter of history. Our system now covers the Atlantic, Gulf and Pacific seaboards, as well as a great chain of overland wireless stations from Maine to California and from the Great Lakes to New Orleans.
    I  NOW  PREDICT  THE  SUCCESSFUL  TRANSMISSION  OF  TRANSPACIFIC  WIRELESS  BY  THE  SYSTEM  OWNED  BY  THE  AMERICAN  DE  FOREST  WIRELESS  TELEGRAPH  COMPANY.
ABRAHAM  WHITE,        
President.