On This Day in Telephone History November 11TH 1921 Burial of the "Unknown Soldier" Loudspeakers Interconnected By AT&T Long Distance Telephone Lines. Exercises at burial of the "Unknown Soldier" at Arlington, Virginia, heard by 150,000 people in gatherings at Arlington, New York, and San Francisco, over loudspeakers interconnected by AT&T long distance telephone lines.

On This Day in Telephone History November 11TH 1921

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On This Day in Telephone History November 11TH 1921 Burial of the “Unknown Soldier” Loudspeakers Interconnected By AT&T Long Distance Telephone Lines.

Exercises at burial of the “Unknown Soldier” at Arlington, Virginia, heard by 150,000 people in gatherings at Arlington, New York, and San Francisco, over loudspeakers interconnected by AT&T long distance telephone lines.