Notes: First published in Great Britain by Rapp & Whiting Ltd. Rapp & Whiting edition published 1969 Corgi edition published 1970 Corgi edition reprinted 1973 Corgi edition reprinted 1975 Corgi edition reprinted 1979 Corgi edition reprinted 1980 (twice) Corgi edition reprinted 1981 Corgi edition reprinted 1982 Corgi edition reprinted 1983 Corgi edition reprinted 1984 Corgi edition reprinted 1986 Corgi edition reprinted 1987 Corgi edition reprinted 1989 Corgi edition reprinted 1990 (twice) Corgi edition reprinted 1991 Corgi edition reprinted 1992 Cover art not credited, no visible signature Title & author are raised text on front cover.