[4] Music Sales had launched a separate company called Book Sales Ltd and the earliest Book Sales catalogue, issued in the early 70s, included compilations of underground comic strips, art and photography titles and one of the earliest books on the then newly discovered art of video.

These include Morrissey & Marr: The Severed Alliance by Johnny Rogan, Dear Boy: The Life of Keith Moon by Tony Fletcher, Uptight: The Velvet Underground Story by Victor Bockris and Catch A Fire: The Life of Bob Marley by Timothy White.

Among the rock and pop writers whose work has been published by Omnibus over the years are Richard Williams, Chris Welch, Peter Dogget, Patrick Humphries, David Sinclair and Everett True (UK) and Dave Marsh, Paul Williams, Nelson George, Jerry Hopkins, David Ritz and Danny Sugerman (US).

In 2007, Omnibus published Colin Larkin's Encyclopedia of Popular Music (Concise Edition).

At 1,600 pages, this is the abridged version of Larkin's 10-volume encyclopedia, a biographical listing of rock, pop and jazz artists.