How do I find out any history or info on one of the dolls in the doll room. It looked like a creepy Merlin opening a box?

Definately ask a guide they are very nice and knowledgeable. I feel if they didn't know they would find out for you.

Ask one of the tour guides. They are very nice and knowledgeable about the items in the museum.

You could tweet at Zak and ask him

Ask the doll to tell you about herself..

Go to the Ghost Adventures website or goigle the doll by name.