| H-Atlantic | International online discussion list for Atlantic World History from 1500 to 1800 | Culture |
| Hale-Byrnes House (Delaware) | Site of a Council of War on September 6, 1777, five days before the Battle of the Brandywine | Historic Sites |
| The Hampton Historical Society (New Hampshire) | Increase public knowledge and understanding of the history and cultural heritage of the town of Hampton, New Hampshire, from its earliest inhabitants to the present generation. | Societies |
| Hampton National Historic Site (Maryland) | Official Hampton Mansion Site | Historic Sites |
| Hancock Shaker Village (Massachusetts) | "...we promote appreciation of the aesthetics, beliefs, achievements and controversies that have defined the Shaker experience in America." | Historic Sites |
| Harriton House (Pennsylvania) | 1704 home; lived in by Charles Thomson, first and only Secretary to the Continental Congresses. | Historic Sites |
| Hatheway House (Connecticut) | Built in the 1760s by Shem Burbank for his bride. | Historic Sites |
| Haw River Historical Association (North Carolina) | Dedicated to the preservation of Haw River and its unique heritage | Societies |
| Hebron Historical Society (Connecticut) | "to develop interest in, preserve, and promote interest in Hebron history by every feasible means to as wide an audience as possible." | Societies |
| Henricus Historical Park (Virginia) | ...re-creating the second successful English settlement in the New World. | Historic Sites |
| The Hermitage Historical Society (Pennsylvania) | Involved in a variety of preservation projects. | Societies |
| Hingham Historical Society (Massachusetts) | To collect, preserve and exhibit items of historical significance and to study the history of the Town of Hingham | Societies |
| His Majesty's Fortieth Regiment of Foot | "...to commemorate the role of the British soldier who served in the colonies during America's struggle for independence, 1775-1783." | Living History |
| His Majesty's 33rd Regiment of Foot | British group, "...represents the 8th company of the 33rd Foot, from 1812 to 1816" | Living History |
| His Majesty's Sixty-Second Regiment of Foot | "...strives to portray the officers, men, and followers belonging to the junior British regiment in Lieutenant-General John Burgoyne's Army from Canada during the Northern Campaign of 1777." | Living History |
| Historic Angling Enterprises | "Fly & Coarse Tackle from the 1400's to the Mid-1800's" | Culture |
| Historic Catasauqua Preservation Association (Pennsylvania) | "Our members enact their passion for historic preservation through events that highlight Catasauqua's rich history." | Societies |
| Historic Hampton, Inc. (Maryland) | "...to promote directly the historical, scientific, educational and interpretive activities of the Hampton National Historic Site" | Societies |
| Historic Hudson Valley (New York) | "Celebrate the history, architecture, landscape, and material culture of the Hudson Valley, advancing its importance and thereby assuring its preservation." | Historic Sites |
| Historic Jamestowne (Virginia) | "...preserve, protect and promote the original site of the first permanent English settlement in North America" | Historic Sites |
| Historic Locust Grove (Kentucky) | "...original 694 acre farm established by William and Lucy Clark Croghan in 1790" | Historic Sites |
| Historic London Town and Gardens (Maryland) | Located on the South River, just 10 minutes from Annapolis, MD, London Town is a unique historic treasure with 8 acres of woodland gardens, a national historic landmark, on-going archaeology, and wedding or events destination. | Historic Sites |
| Historic New England | "...a museum of cultural history that collects and preserves buildings, landscapes, and objects dating from the seventeenth century to the present..." | Culture |
| The Historic Preservation Trust of Berks County (Pennsylvania) | Owns and maintains eight historic properties in Berks County | Societies |
| Historic Roscoe Village (Ohio) | A restored 1830s canal town along what once was the Ohio-Erie Canal. | Historic Sites |
| Historic St. Mary's City (Maryland) | The site of the fourth permanent settlement in British North America, Maryland's first capital, and the birthplace of religious toleration. | Historic Sites |
| Historic Washington (Kentucky) | "One of the most unique communities in the world and THE MOST Unique community in Kentucky" | Historic Sites |
| An Historical Lady | The country diary of a living history reenactor living in an 18thc. house | Blogs |
| The Historical Marker Database | An illustrated searchable online catalog of historical information viewed through the filter of roadside and other permanent outdoor markers, monuments, and plaques. | Culture |
| Historical Society of Amherst, NH (New Hampshire) | "Promote the study and recording of Amherst’s rich history, and to arrange for the safekeeping of artifacts and old records." | Societies |
| Historical Society of Berks County (Pennsylvania) | "...to focus attention on the unique local history, the vast material culture, and the diverse cultural heritage of Berks County." | Societies |
| The Historical Society of Dauphin County (Pennsylvania) | Collect, preserve, exhibit, publish, and promote interest in the history of Dauphin County for the education, enjoyment, and benefit of the public. | Societies |
| Historical Society of East Hartford (Connecticut) | "Instill into the townspeople of East Hartford a sense of the history of the town..." | Societies |
| Historical Society of Penns Grove, Carneys Point, and Oldmans (New Jersey) | "... to preserve the history of the Penns Grove, Carneys Point, and Oldmans communities." | Societies |
| The Historical Society of Pennsylvania (Pennsylvania) | One of the oldest historical societies in the United States and holds many national treasures. | Societies |
| Historical Society of Princeton (New Jersey) | A museum and library dedicated to interpreting the history of Princeton | Societies |
| The Historical Society of the Somerset Hills (New Jersey) | "...acquire, conserve and share local artifacts and information on matters of local historic interest; cultivate interest in local history; encourage the preservation of local historic resources; facilitate historic research..." | Societies |
| The Historical Society of the Town of Bolton (New York) | Locate and preserve any materials that may relate to the history of the Town | Societies |
| Historical Trekking | "...a hobby where we as 21st century people attempt a task someone in our chosen time period would have done, using only the tools and equipment they would have used, or the knowledge we have gleaned from research." | Living History |
| History Directory -- Eighteenth Century Period | A collection of information concerning the Eighteenth Century period of history. | Culture |
| The History Girl | "Join me as I discover the unique and interesting historic sites and antiques New Jersey has to offer." | Blogs |
| History Myths Debunked | "The Whole Truth and Nothing But the Truth" | Blogs |
| Historyonics | "...a space for me to rant in that most seventeenth-century sense of the word..." | Blogs |
| Richard Hooker: Assorted Works | Assorted works | Documents |
| Hope Lodge (Pennsylvania) | Encampment for colonial troops after the Battle of Germantown | Historic Sites |
| Horry County Historical Society (South Carolina) | "Discovering and preserving written records and oral traditions pertaining to the history of Horry County" | Societies |
| The House of the Seven Gables (Massachusetts) | Built in 1668, this is the oldest surviving 17th century wooden mansion in New England. | Historic Sites |
| Sam Houston Historic Schoolhouse (Tennessee) | it is the year 1812 and Samuel Houston is your schoolmasterI. | Historic Sites |
| Hoydens and Firebrands | "Roaring Ladies Who Write About The Seventeenth Century" | Blogs |
| Hubbardton Battlefield State Historic Site (Vermont) | General Burgoyne's advance was checked here in 1777 | Historic Sites |
| The Huguenot Society of the Founders of Manakin In the Colony of Virginia (Virginia) | To promote interest in the study of Huguenots who settled in and around Manakintowne, Virginia, and the family lines descended therefrom. | Societies |
| The Huntington Historical Society (New York) | "Perpetuate an interest in things Historic;......in fact all Historic relics relating to the Town of Huntington since 1653." | Societies |
| Hyde Collection Catablog | "The World’s Greatest Samuel Johnson Collection, One Book at a Time" | Blogs |
| Hygiene in Colonial America: Teeth and Bathing | Info and additional links on hygiene practices in Colonial America | Culture |
