Denver. Police department. communications systems Radio station staff chosen. RAN N 1, 1931 p.2 Have new radio control system. Post N 2, 1931 p.1 Radio system for police put into operation with 15 radio-equipped automobiles. Post F l, 1932 p.1 Radio system causes reduction in crime. Past N 13, 1932 p.13 To join U. S. radio chain. R^N^ N 25, 1934
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