| 620 Associates (MS044) |
| Badger, William (MS007) |
| Boyd, William (MS050.2) |
| Bridget Graffort Club (MS045) |
| Central Baptist Church (MS020) |
| Coues Family (MS011) |
| Customs House Records (MS016) |
| Daughters of the American Revolution, Ranger Chapt (MS038) |
| Decatur Family (MS055) |
| Dover Medical Society (MS054) |
| Family Service Association (MS013) |
| Flagg, William (MS048) |
| Frost Family (MS034) |
| Green's Drug Store (MS006) |
| Hale, Samuel (MS059) |
| Hale, Samuel (MS043) |
| Harris Family (MS078) |
| Hill, Arthur Dehon (MS030) |
| Hill, Arthur Dehon (MS005) |
| Isles of Shoals (MS058) |
| John Langdon (MS050.3) |
| Ladd Family (MS018) |
| Ladd, William (MS017) |
| Langdon, John, William Whipple and Elwyn Family (MS050) |
| Langdon, Samuel (MS049) |
| Larkin Collection (MS010) |
| MacPhaedris-Warner-Penhallow (MS003) |
| Martin, Joshua (MS050.1) |
| Mechanic Fire Society (MS029) |
| Miller, Tobias Ham (MS012) |
| New Castle Bridge Association (MS024) |
| New Hampshire Fire and Marine Insurance Co. (MS002) |
| North Church (MS036) |
| Parrott-Spalding Family (MS079) |
| Parsons Family Papers (MS082) |
| Peirce Family (MS009) |
| Pepperrell, William (MS028) |
| Pickering, William and Valentine (MS042.1) |
| Portsmouth Athenaeum (MS001) |
| Portsmouth Customs House Office Records (MS016) |
| Portsmouth Female Asylum (MS057) |
| Portsmouth Fire Relief (MS071) |
| Portsmouth Historical Society Collection (MS022) |
| Portsmouth Historical Society Records (MS023) |
| Portsmouth Housing Authority (MS080) |
| Portsmouth Marine Society (MS026) |
| Portsmouth Medical Society (MS046) |
| Portsmouth Police Department Records (MS033) |
| Portsmouth Property Records (MS081) |
| Portsmouth Regional Visiting Nurses Association (MS021) |
| Portsmouth School Department (MS032) |
| Portsmouth Yacht Club (MS047) |
| Randall, Wendell (MS041) |
| Rockingham Association of Congregational Christian (MS052) |
| Rockingham County Court of Common Pleas (MS042) |
| Rockingham House (MS053) |
| Rollins, Ichabod (MS059) |
| Sandford, John (MS015) |
| Sise, John (MS037) |
| South Church (MS039) |
| South Church (MS004) |
| St. John's Church (MS027) |
| Temple Israel (MS051) |
| Treadwell Family (MS008) |
| Tredick and Brewster Family Papers (MS019) |
| United Spanish War Veterans Winfield Scott Schley (MS040) |
| Warner House Association (MS031) |
| Wendell, Andrew Peterson (MS070) |
| Wendell Family (MS025) |
| Wentworth, Hugh Hall and Joshua Wentworth (Larkin) (MS010) |
| Wentworth-by-the-Sea (MS060) |
| Wentworth-Gardner Association (MS043) |
| Whipple Traill Spence (MS074) |
| Woodbury, Charles Levi (MS014) |
