>cabinet for publicly accessible collections.
>must have plexiglass (preferred) or glass covers that can lock.
>each drawer cover should lock individually
>cabinet must have a door that can lock at the end of the day.



What you describe sounds a lot like the cases I've seen in Nature Company
stores, where they have their mineral specimens out for display and sale:
very attractive and sturdy; each drawer locks separately. Perhaps you could
contact their corporate office and find out who makes their cases.