Thanks Virgil. However, I'm not trying to assign an icon to the Page Type itself, but to the Pages of a customer Page Type. For example, I have a Page Type called "Resource" and each resource needs its own image or icon (just like Page Types have).
What I was looking for was an out-of-the-box Page Type that implements something similar, but I've yet to find one. I believe there are 3 fields, one for the initial "selector" and one each for the image and font. Depending upon the selection, either field is shown.