First Edition, 1961
UK, 1965
UK, 1974
1989
UK, 1992
Random House Special 35th Anniversary Edition, 1996
Spain, 1998
Portugese Edition
Spanish Edition, 2001
UK, 2002
France, 2003
Germany, 2006
Chinese Edition, 2007
UK, 2008
Audiobook, 2008
50th Anniversary Edition (featuring the original art), 2011