Here's the first part of the 50th issue of Cracked from March 1966. As usual, the cover is by John Severin.
On the contents page, in the blurb for What's Up On Our Front Cover?:
The natives are certainly restless tonight! It looks like BWANA sylvester isn't the BIG man he once was. That should teach him to fool around with witch doctors, and especially witch doctors that don't belong to the A. M. A. (AFRICAN MAU-MAU ASSOCIATION)! Well, one good thing about this whole, messy affair is that Sylvester can save money on his return trip to the United States. They can mail him in an envelope!