Adventures of the 4th Doctor is a 107-book series with 107 released primary works first released in 1976 with contributions by Ian Marter, Terrance Dicks, Jacqueline Rayner, Stephen Marley, William H. Keith Jr., Tom Baker, James Goss, John Peel, Philip Hinchcliffe, Victor Pemberton, Justin Richards, Terry Nation, Bernard Venables, Keith Topping, Peter Darvill-Evans, Chris Boucher, Nicholas Briggs, Jim Mortimore, Alan Barnes, Marc Platt, Simon A. Forward, John Dorney, Jonathan Morris, Nigel Fairs, Philip Reeve, Andrew Smith, David Llewellyn, Paul Magrs, David A. McIntee, Dave Stone, David Fisher, Gareth Roberts, Eddie Robson, Lalla Ward, John Leeson, John Challis, Ray Brooks, Miranda Raison, Hugh Fraser, Mark Wright, Cavan Scott, Phil Mulryne, and Christopher H. Bidmead.