Robert Bartow Lubbers was an American comic strip and comic book artist best known for his work on such strips as Tarzan, Li'l Abner and Long Sam.
Bob Lubbers' The Saint (October 4, 1959)
Bob Lubbers' Long Sam (May 15, 1957). Note mirror reflection with signature reversed.
Tarzan, a fictional character created by Edgar Rice Burroughs, first appeared in the 1912 novel Tarzan of the Apes, and then in 23 sequels. The character proved immensely popular and quickly made the jump to other media, including comics.
Burne Hogarth's Tarzan (June 25, 1939)
Dell's Tarzan #1 (January–February 1948)
John Celardo drew the Tarzan comic strip from 1954 to 1968.