Amid drastic drop-offs in CD sales, the major labels have discovered new sources of revenue — by looking in their basements. Sony BMG recently launched Icon Collectibles, a line of rare photos from the label’s archives, with candid, unpublished shots of artists from Miles Davis to Bob Dylan, and Warner label Rhino Entertainment just started selling reproductions of concert posters for bands like the Grateful Dead and Jefferson Airplane.

• Read the rest of the story and check out some more Family Dog posters here.

• Photo Gallery: Rare Photos Taken at Columbia’s Famed 30th Street Studio