Three legged what?

In looking around I'm not only finding fantastic Science Fiction magazine covers that are fun, but I'm also finding various book covers that are pretty interesting as well:

I think the title hooked me! It's pretty funny and I liked that she was green as well. It reminds me of some of the choose-your-own-adventure books I've seen from the 1970's.

I plan on finding some of these older book covers and printing them for zipper bags. More are located here: Pulp Art & Artifacts