Doctor Who Target Books (Numerical Order) is a 43-book series with 43 released primary works first released in 1964 with contributions by Terrance Dicks, Ian Marter, Malcolm Hulke, David Whitaker, Barry Letts, Christopher H. Bidmead, Philip Hinschcliffe, Philip Hinchcliffe, Bill Strutton, Eric Pringle, Donald Cotton, William Emms, Eric Schlosser, Paul Erickson, Nigel Robinson, Stephen Wyatt, John Peel, Ben Aaronovitch, Paul Cornell, Gary Russell, James Goss, Eric Saward, Jenny T. Colgan, Mark Gatiss, Robert Shearman, Phil Ford, Keith Temple, and Pete McTighe.