If by "Discovery Drawers" you mean drawers for collection objects that have glass tops so visitors can open them and see objects without being able to touch objects, you might get in touch witih Delta Designs in Topeka, Kansas. I am sorry I don't have their contact numbers handy. We have had a number of such drawer units made for collection storage and have also used them in exhibitions. If you would like further information about them, let me know. Deborah Cooper Museum Collections Coordinator [log in to unmask]