Network Telephone Line Connections, 1929
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This Bell System diagram shows the layout of the
permanent and recurring broadcast line connections on the West Coast,
as of January 15, 1929. This clearly
indicates why NBC first placed its West Coast network headquarters in
San Francisco. Similar diagrams from 1938 show that new lines had been
installed for all networks, running from Salt Lake City directly to Los
Angeles. That year marked the beginning of an exodus that saw virtually
all West Coast network program origination move to Los Angeles within a
few years' time.
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