Secretary of State: http://www.sos.nh.gov/corporate/index.html

Contact info:

Phone: (603) 271-3246

Physical Address:

Corporation Division
Department of State
107 N Main St.
Concord, NH 03301-4989

Name search: https://www.sos.nh.gov/corporate/soskb/csearch.asp
Corporation and LLC forms and fees: http://www.sos.nh.gov/corporate/Forms.html
Department of Revenue: http://www.nh.gov/revenue/business/index.htm
Department of licensing: http://www.nh.gov/revenue/business/dra_licenses.htm