I can only hint, here, at the fantastic career of John Creasey (1908 - 73): 500+ novels under 20+ pseudonyms, and over 60 million copies of his books have been sold worldwide. He created several long-running series, notably the Toff (58 titles), Inspector West (43 titles), Dr. Palfrey (31 titles), and - as Anthony Morton - the Baron (49 titles). Read all about it in John Creasey - Fact or Fiction? A Candid Commentary in Third Person, With a Bibliography by John Creasey and Robert E. Briney (Armchair Detective Press, White Bear Lake/Minnesota, 1968: revised edition, 1969).
