I don't really display them. I have them opened up in matchcover plastic pages. About the only practical way to keep track of the collection since there are 30+ ring binders.

I do scan the pages to my portable devices, just as I do with chips, so I can check most of the characteristics to see if I need a new one at a show. It's harder for the full books since you can't see the inside printing, but I try to keep a duplicate cover of most of them and it is behind the full-book in the page so I can check both sides.

Here's an example of what the front sides of some 20-strikes look like: