Illustrator Howell Dodd appears to have been especially active in the 50s and 60s.  Other than that he was once the director of the Famous Artists’ School, I couldn’t find much biographical information on Howell Dodd.  Even the date of his death is uncertain.  (Some sites claim that Dodd died in 2005 while others list him as still being alive and active at the age of 106!)  Fortunately, his work speaks for itself.