doi:10.7916/d8-7680-rp34Reminiscences of Bruce Robertson 1963Robertson, Bruceoral historiessound recordingssound recording - nonmusicalEditorsRadio broadcastingRadio advertisingPeriodicalsRobertson, BruceEditor of broadcasting magazines; history of commercial broadcasting and beginning of networks, 1926; repeat broadcasts; radio advertising, 1932; coverage of Chicago World's Fair