American radio icon “Cousin Brucie” Morrow, who catapulted to national fame playing rock n’ roll hits for teenagers on New York’s “Music Radio 77” WABC (770) from 1961 to 1974 during AM top 40’s heyday, is ready for another turn at the venerable station — and he’s eager to recapture the magic of a bygone era. The 84-year-old Morrow — born Bruce Meyerowitz in Brooklyn — will debut “Cousin Brucie’s Saturday Night Rock & Roll Party” on Saturday, Sept. 5. Although 46 years have passed since Morrow left WABC, and many of his listeners are now retired, he tells Inside Radio his mission...