In the beginning there was Bono. And what a baby face he had. Photographs documenting the gritty beginnings of U2 in the smoky pubs and clubs of 1970s Dublin are being unveiled Thursday at an exhibition in the band’s home city. Much of the exhibition by photographer Patrick Brocklebank has never been seen before. Brocklebank’s black-and-white images capture the teenage Bono, The Edge, Adam Clayton and Larry Mullen in 1978 and 1979 gigs, their vibrant hairdos and fashion missteps, and their clowning around in impromptu shoots and scruffy nighttime hangouts. At the time, fellow teenager Brocklebank recalls he thought U2 might just be the one local act to reach the big time — not because they sounded better than their rivals, but because they were harder-working. U2 manager Paul McGuinness is launching the exhibition at The Little Museum of Dublin, a townhouse whose walls are filled, floor to ceiling, with eclectic memorabilia of Ireland’s turbulent 20th century. The 32-photo show will be on display through Sept. 2, and Brocklebank also is selling original prints of 10 images through the museum’s Web site. Formed in 1976, the band first performed under the name Feedback, then The Hype, before settling on U2 in March 1978. Since 1980 the band has recorded 12 albums, sold more than 150 million records, won 22 Grammys and become one of the highest-grossing live acts in history. … Carole King, the voice behind dozens of standards like “It’s Too Late,” ”You’ve Got a Friend” and “(You Make Me Feel Like) A Natural Woman,” The best-selling author doubts she will ever write another song and said that her 2010 “Troubadours Reunion” tour with James Taylor “was a good way to go out.” Her 25 million-selling “Tapestry” launched the singer-songwriter era in 1971 and became the first real blockbuster album.