I have some bricks, too.
I'm going to have a local monument shop emboss; "The HOOVER Company" on them.
As far as the vault, it has been ripped up. I took the signage right outside of the room that reads,"Modles and Samples", commonly known as the "vault". I don't think much progress (if any) has been made at the place since my last trip. This is my 12th visit ti North Canton. Imagine that.