It’s June 14th and here are some reasons why this day matters in rock history: In 1970, Eric Clapton’s band Derek and the Dominoes played their first-ever gig when they performed at London’s Lyceum.

The telephone poles scattered across downtown St. John’s, N.L. make up a museum of the city’s musical past. The young punk rock scene is keeping the do-it-yourself tradition of making posters alive— ...