Beginning on October 7, 1922, baseball's World Series between the New York Yankees and New York Giants was transmitted by specially prepared telegraph lines to Westinghouse's WJZ in Newark, New Jersey. (Some later reports claim that this broadcast was also carried over General Electric's WGY in Schenectady, New York, but there is no evidence from contemporary accounts that this was the case). The quote from the "Popenoe MS" comes from a manuscript prepared in 1926 by Charles B. Popenoe, who coordinated broadcasting activities at WJZ.
History of Radio to 1926, Gleason Archer, 1938, page 218:

    It was perhaps inevitable that the American Telephone Company should sooner or later have come into conflict with the Westinghouse Company over questions of radio broadcasting. Telephony, whether by wire or wireless, was considered by A. T. & T. as its special province. It had entered the broadcasting field largely to develop the art as well as to protect its own interests. It was natural for it to regard the Westinghouse Company and others as trespassers on its special domain. This will perhaps account for its ungenerous, not to say hostile, attitude toward WJZ as disclosed by the Popenoe MS concerning early days at the station:
    "In the early summer of 1922 by special concession," wrote Mr. Popenoe, "the New York Telephone Company supplied us with wires in order to broadcast the music of the New York Philharmonic Orchestra direct from the Lewisohn Stadium, New York City.  .  .  . We had hoped that the Telephone Company would continue to lease us wires, but we were doomed to disappointment, as Mr. A. H. Griswold of that Company bluntly turned down our request for wires for use at the 1922 World's Series Games, the first ever broadcast. At that time the American Telephone & Telegraph Company were operating  .  .  . WEAF. This fact no doubt accounted for their flat refusal.
    "Needless to say we were disappointed, but recently L. R. Krumm, Superintendent of Radio Operators, had been succeeded by C. W. Horn in the same capacity and as Mr. Horn was well connected with the Western Union Company we decided to investigate their wire services. To our great satisfaction we found Mr. J. C. Williver, Vice-President of Western Union, willing to help us  .  .  .
    "To return to our story, the World's Series, 1922. We heaved a sigh of relief after ascertaining that Western Union wires could be used. Through the assistance of the New York Tribune and their famous sports writer, Mr. Grantland Rice, we did a one hundred per cent job of this broadcasting feature, besides securing a great deal of front page publicity from the Tribune."