 During his lifetime, he wrote and published six more novels under the name John Wyndham, and used that name professionally from 1951 forward.His 1959 novel "The Outward Urge" was credited to John Wyndham and Lucas Parkes, but "Lucas Parkes" is yet another pseudonym for Wyndham himself.As well, two-story collections published in the 1950s came out under Wyndham's name, but included several pre-1951 stories originally published as by John Beynon.