The first ever behind-the-scenes gallery retrospective of the career of influential art, punk and metal group Gwar. “Let There Be Gwar” features more than 400 objects spanning the group’s three-decade career, including handwritten lyrics, production drawings, tour ledgers, arrest reports, photography, film, lawsuit transcripts, music videos, set designs, fan letters, acid drawings and album art. The exhibit will also include more personal items such as never-before-seen storyboards, genitalia molds and handwritten set lists, as well as personal sketchbooks from members Dave Brockie, Matt Maguire and Bob Gorman. The exhibit is the result of unprecedented access to the archives of the Richmond-based Slave Pit artist collective, from which Gwar originated. Along with the featured objects, the exhibit will also include a talk called “The Metaphysics of the Creative City” by Sarah Cunningham, former director of arts education at the National Endowment for the Arts, on Sept. 19. Proceeds from “Let There Be Gwar” will go toward a book and documentary film celebrating the group’s 30th anniversary next year.