If you were born on or before December 31, 1947, your NH Resident Permanent Over-68 Hunting and Fishing license is grandfathered in. This is a free license that can only be obtained at Fish and Game headquarters or Regional Offices 1 (Lancaster), 2 (New Hampton) and 4 (Keene).
Get application form here:
http://www.wildlife.state.nh.us/lice...ver-68-app.pdf
Non-resident seniors pay regular non-resident license prices.