AT&T Long Lines Routes
Colorado
January 1976
- Heavy solid lines are microwave radio routes
- Light solid lines are open-wire routes
- Beaded lines are coaxial-cable routes
- Dashed lines are non-coaxial (wire-pair carrier) routes
From map titled "Routes of American Telephone and Telegraph Company / Western Area", issued January 1976
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Created on February 6, 2003 at 23:04 by Albert LaFrance