Roger Davis was the original opening narrator until he replaced Pete Duel as Joshua Smith.
When the guys get back to civilization they shave their beards off except that Kid Curry leaves his mustache on, and will keep it for several episodes before shaving it off for good. This would become a slight problem, as the future episodes would be broadcast out of production order, and there would be one where he is clean-shaven and the next one would have him with his mustache back on.