The version of the image that I found was scaled badly.
This is what I was able to recreate, but I'm sure the original file had a higher resolution.
I'll keep on looking for the original version.
I found a bunch of great images signed with "Park", which have the same art style as the ones done by Rick Parks. I'm adding them as his images until someone proves me wrong.
Sadly, I found out that Rick Parks passed away in 1996, so I'll be out of luck in trying to contact him.
I also added two images (McCoy and Bogart) that have been badly rescaled by somebody, but I haven't had any luck finding better versions of them. If anybody has the original files I'd be happy to replace my versions with those.
The version of the image that I found was scaled badly.
This is what I was able to recreate, but I'm sure the original file had a higher resolution.
I'll keep on looking for the original version.