From 1937, it's Jungle Jim in 12 episodes of glorious Black and White.
Two safaris enter the African jungle intent on finding a white girl who is the heiress to a fortune. One safari, led by Jungle Jim (our hero), wants to make sure she gets the news that she is now a rich woman. The leaders of the other safari (the very bad dudes that we hate) want to kill the girl so they can try to get hold of her inheritance