r/jg me of the radio industry in the United States has been the most remarkable achievement . . . starting from a single broadcasting station in 1920the pioneer station KDKA in Pittsburgh. . . .
David Sarnoff, The Radio Industry.
The first regular broadcasting station to be established in the United States was . . . the station well known as KDKA. . . .
A. R. Burrows, The Story of Broadcasting.
One of the earliest and most successful . . .stations was KDKA at East Pittsburgh, Pa., owned by the Westinghouse Electric and Manufacturing...