Always use protection.

My miniature AD&D Monster Manual has finally arrived (from Italy, no less) and I now own all of the "big three" AD&D rulebooks in this format.

Now the question is: How can I prevent them from getting all dinged out-of-shape if I carry them around in, say, my backpack?

I need some kind of rigid, solidly-constructed protective container for the set, but what would fit the bill?

The whole stack of three books, by the way, is about two inches wide, three inches long, and a tiny bit less than one inch "deep."

Hmm.