In 1926, Vincent Kraft tied together his four stations – KYA, KGA, KEX and KYA -- into one of the first radio networks. Then in 1928, he sold all four stations to Adolph F. Linden, He in turn joined forces with the Columbia Broadcasting System (later CBS) to distribute the network’s programs West of Omaha. On certain nights, Columbia would relay Seattle programs to the East Coast. The new 14-station network was called the American Broadcasting Company (unrelated to today’s ABC network).
This map shows the American Broadcasting Company's stations at its peak in 1929. Programs originated on alternate nights from KJR in Seattle and KYA in San Francisco. In January 1929 the network was extended to Salt Lake City, Denver, Omaha and Chicago where it connected with the Columbia Broadcasting System. ABC and CBS established a reciprocal program exchange, which brought Seattle programs to the East coast. The network operated only a few months, until KJR and ABC went broke in September, 1929