Images in Ebook in one location.

I want to release a Kindle Ebook with 10 illustrations which relate to the 25 chapters in the book. It may look odd having illustrations at the beginning of only 10 of the 25 chapters so I was thinking of an additional chapter with just the 10 illustrations back to back. In the past I've seen paper books set up like this, a group of images in the middle of a book.

I have seen a limited number of EBooks with images. Is this unusual, grouping the images together instead of having them within chapters?