27^0 <4,0C» 

 ONE CHAIN( P PA J WHICH GCCS UP ONLY ONC HOUR * WtEK NOT SHOWN -THIS INVOLVES 

 30 STATIONS AND 5000 CIRCUIT MILES. ALSO ONC CHAlNlGOLDJWhICH GOCS UP t/f HOUR A WETK AJJO INVOLVES 

 35TATI0MS AND ItOO CIRCUIT MILES IS NOT SHOWN ARROWS SHOW NORMAL DlftTCriON or TRANSMISSION 

 •-INDICATES POINTS WHERE ONE OR MORE RADIO STATIONS AAE CONNECTefr 



Fig. 1 — Routes of Bell System Program Network Chains in the United States as of September 1, 1929. 



