One manual depicted Walt Kelly's friend Joseph McCarthy as a caveman in the same period that saw the creation of Kelly's most famous character, Pogo, a daily comic strip that was created by Kelly and syndicated to American newspapers from 1948 until 1975.
One manual depicted his friend Ward Kimball as a caveman. Kelly used the strip in part as a vehicle for his liberal and humanistic political and social views, and satirized, among other things, Senator Joseph McCarthy's anti-Communist demagogy (in the form of a shotgun-wielding bobcat named "") and the sectarian and dogmatic behavior of communists in the form of two comically doctrinaire cowbirds. 
