It would seem as if this Fallout Shelter sign was given it’s own formal, grandiose lettering; however, this sign is at the entrance to the Boston Veterinary Clinic, part of the Animal Rescue League of Boston, located at 10 Chandler Street.
The more formal sign points to the way to adopt a furry friend, while the other sign…well…we know what that was for.
Fallout Five Zero
Fallout Five Zero 
Was this sign way up high like most of the others?