Detroit News, April 4, 1906, page 2:
"ADS" BY WIRELESS
LATEST INNOVATION IN UP-TO-DATE NEWSPAPER WORK.
Advertisements come to The News through every conceivable channel, but it remained for the advertising department to be surprised this morning to receive an advertising order by wireless telegraphy. The message was dictated on board the steamer City of Detroit near Cleveland at 8:45 a. m. and was received by the International Clark Wireless Telegraph Co. in this city at almost the same instant. The "ad." sent through the air across so many miles is found on page 11.
The International Clark Wireless Telegraph Co. has been conducting experiments from the steamers of the D. & C. line which are said to have resulted practically in the solution of the problem of commercializing the wireless system by making the cost less than the old way. The power used to convey a 20-inch "ad." from Cleveland to Detroit was just sufficient to light an ordinary electric chandelier.