The 2,600-square-foot exhibit, which is open 11 a.m. to 8 p.m. Thursdays to Mondays through Jan. 31, spans eras and genres alike. There are numerous rare and never-before-seen items here, featuring artists from ZZ Top to Nine Inch Nails, Bo Diddley to Britney Spears. (K.M. Cannon/Las Vegas Review-Journal)