Dallas Morning News, May 7, 1919, page 1:
CONCERT BY WIRELESS FOR VESSELS AT SEA
GEORGE WASHINGTON EQUIPMENT MADE TO ENTERTAIN MEN ON OTHER SHIPS.
Special to The News.
New York, May 6.--The wireless telephone equipment installed on the United States transport George Washington for the use of President Wilson was used by Secretary of War Baker for conversations with subordinates in the War Department at Washington while the transport was several hundred miles at sea, it was learned on the arrival of the vessel here. The transport brought a large number of troops.
Officers of the transport said that by the use of wireless telephone equipment similar to that used by Secretary Baker a dozen or more craft within 300 miles enjoyed the nightly talking machine concerts aboard vessel. Repeated wireless calls for "more music" were declared to have been received by the George Washington's skipper from the President Grant, about 100 miles astern, so that sailors aboard here could continue dancing to the swinging strains reproduced by wireless.