The NH Bar Association (www.nhbar.org) might be a good place to start.

 A couple of law fims that I know of:

 
Devine Millimet: www.dmb.com

Wiggin-Nourie: www.wiggin-nourie.com

Sheehan, Phinney, Bass + Green: www.sheehan.com

Orr & Reno: www.orr-reno.com