Michigan State Gazette, June, 1906, page 2:
THE MAY FESTIVAL BY TELLEVENT
An attempt was made by The American Tellevent Co., during the May Festival at Ann Arbor, to demonstrate the possibilities of the new service. A double transmitter, of the type used by that company for transmissions of this kind, was placed on the balcony, which was the only place that could be secured for it, and the entire program in one afternoon was transmitted to Detroit.
Owing to the inability of the company to secure permission to place the instruments in proper position on the stage, the results were not as satisfactory as it was hoped they would be. Had proper permission been secured from the Festival authorities the music of the entire Festival program would have been transmitted to New York City and would have thus given the American public a hint as to its future uses and advantages.