Another place to seek information, albeit a bit more humble:
http://www.historicalsocietiesNH.org. On the
Directory page find contact information (incluing many e-mail addresses) for all the historical societies in NH.
There is also a listserv which reaches the historical society community in NH. You could submit a question such as this without actually subscribing to the listserv. Write up your question in trebuchet, 12-point, and send it to
AnnSprague@historicalsocietiesNH.org with a subject line of "Item for the e-ssociate." Include your (real) name and contact information via which you would like to receive responses.