(Copyright © 1962, 1963, 1964 by Norman Thelwell and Beaverbrook Newspapers LTD.)
Norman Thelwell (1923-2004) was a very popular cartoonist known for his PUNCH cartoons -- especially his horse-related drawings. His inky style appeared in many magazines and he appeared in 32 books which sold over 2 million copies in the UK.
You can see why he was very popular by getting yourself over to The Hairy Green Eyeball II blog, which has scans from his book TOP DOG.
TOP DOG Part 1
TOP DOG Part 2
TOP DOG Part 3