Stephen Philip Dowling creator to Garth drawings leaves the character with the adventure "Mind Destroyer" is the 59th Garth adventure in 1969 so he drew the character for 26 years, to take a well deserved retirement (can be a somewhat forced by the Daily Mirror, which was his rather mediocre drawing (based on items that were reported to me and read on the internet so I do not know if it's the truth) but I repeat myself this is my favorite period character.
But in 1970 he came out of retirement he draws a short history of 6 pages with the screenplay Ken Roscoe titled "Garth in Space".
Below the last board of Mind Destroyer I have found that by Indie (and very bad quality) and the last board of Garth In Space.
Provisional translation pending that of Claude