Well it's official, the following comes from Peter Michaud at the NH Division Of Historical Resources:
The State Historical Resources Council or SHRC met today and approved the Bartlett Round House for nomination to the National Register. The nomination should be heading out later this week or at the top of next week.
Congratulations! I will let you know when the nomination has been accepted by NPS and is listed to the NR.
Great News Indeed, a big THANK YOU to all that have supported the saving of the Roundhouse along the way!