NHTI Library Special Collections
- Autism Society of New Hampshire
http://www.autism-society-nh.org/ - The Concord Buildings Collection - A NHTI Library file of all buildings in the city of Concord
- NEARA (New England Antiquities Research Association) - http://www.neara.org/
- NH Chapter of AIA (American Institute of Architects) http://www.aianh.org/