A couple of art pieces by E.C. Segar:
Segar would do promotional ads for upcoming story lines in his Thimble Theatre Comic Strip. Above is the promotional piece for "The Eighth Sea", the 1932 story introducing Bluto the Terrible.
Above is a water-color painting done by Segar for his only assistant, Forrest "Bud" Sagendorf. I think it's great that there is a nautical theme to it.