1910 Census microfilms at Internet Archive

Reel 860. Belknap, Carroll, and Cheshire (EDs 30-42) Counties.
Reel 861. Cheshire (EDs 43-50), Coos, and Grafton (EDs 72-89, 321) Counties.
Reel 862. Grafton (EDs 90-105) and Hillsborough (EDs 106-134) Counties.
Reel 863. Hillsborough (EDs 135-157, 160-171) County.
Reel 864. Hillsborough (EDs 158, 159, 172-182) and Merrimack (EDs 183-216, 320) Counties.
Reel 865. Merrimack (EDs 217-231) and Rockingham (EDs 232-260) Counties.
Reel 866. Rockingham (EDs 261-274), Strafford, and Sullivan Counties.