Norman Thelwell was an English cartoonist who recognised the core elements of humour involved in the pony-and-girl thing! His cartoons were hugely popular (also those on other subjects!) and were collected into a number of books that sold enormously well, such as Angels on Horseback. Having a pony like Sturuss, my family is only too aware of how close to the truth Thelwell was with his pictures, and few other artists have been able to capture that spirit! Sadly, Norman Thelwell died in 2004 after a prolific life and much acclaim.