Using a UserForm to store the images worked the easiest and best for me. As
Peter mentioned, you can arrange the images in the form for easy reference,
and if you use Labels instead of Image controls, you can actually label the
pictures easily as well. The best part is that the images are preloaded and
easy to refer to, especially if you take care to name the label to give some
indication of what image it contains.

Thanks so much for your help.