Surprisingly few Mammoth covers. I guess artists just like painting T-Rexes more. Or else they recognized that Mammoths are harder to make look menacing. I mean, clearly they would be. However, Sesame Street itself figured out that ‘wooly mammoth’ basically translated to ‘fuzzy elephant’ and built what became perhaps the most beloved second wave character around the idea.
I’m assuming this second cover is a cheat, and that the mammoths are insert displays. Who knows, though? Comics.