Photography Center Announces Exhibition of Historic Buildings   The New Hampshire Center for Photography and the Belknap Mill invite the public to view its exhibition Survivors: 200 Years of New Hampshire Architecture.   This exhibition celebrates the rich history of architecture found in New Hampshire through a display of over 70 photographs drawn from a record of over 800 images made by NHCP members. All the buildings depicted are 200 years or more in age, and range from simple structures…