| Caesar's Creek Pioneer Village (Ohio) | A living history museum dedicated to the preserving our history and promoting a better understanding of early life in Southwestern Ohio | Historic Sites |
| California Missions (California) | Covers the 21 missions founded in California between 1769 and 1823. | Historic Sites |
| Camden County Historical Society (New Jersey) | A private, non-profit organization dedicated to the collection, preservation and presentation of the history, historic resources, historical artifacts and documents of Camden County and South Jersey. | Societies |
| Camp Morristown National Historic Park (New Jersey) | Occupied by General George Washington and the Continental Army during the Revolutionary War | Historic Sites |
| Cardiff Shakespeare | Shakespeare related research and events | Blogs |
| Cardinal Wolsey's Today in History | "Cardinal Wolsey's Musings on Tudor History, Medieval History, Early-Modern History and Anything Else that Takes His Fancy" | Blogs |
| The Carolina Brigade | "...to provide mutual support for and dissemination of information among Continental reenactment organizations in North and South Carolina." | Living History |
| The Carter Mansion (Tennessee) | Oldest frame house in Tennessee | Historic Sites |
| Cayuga-Owasco Lakes Historical Society (New York) | Preserving the history and heritage of the Moravia, New York area. | Societies |
| The Century House Historical Society (New York) | Dedicated to the industrial history of the Rosendale natural cement region. | Societies |
| Chester Historical Society (New Jersey) | Preserving the history of Chester, N.J. | Societies |
| Chinese Historical Society of New England (Massachusetts) | The first educational organization dedicated solely to documenting, preserving, and promoting the history and legacy of Chinese immigration in New England | Societies |
| Christiana Historical Society (Delaware) | Historical society for one of the earliest colonial towns in America | Societies |
| Clinton Historical Society (New York) | Collect, preserve, document, research, and interpret the Clinton community's past for today and future generations | Societies |
| The Coalition of Historical Trekkers | "... living historians dedicated to the preservation and study of the pre-1860 frontier people in America" | Living History |
| Coggeshall Farm Museum (Rhode Island) | A living history farm depicting agrarian life in the year 1799 | Historic Sites |
| The Coins of Colonial and Early America | This Project features discussions, descriptions and images of the coins and tokens used in Colonial and Confederation America based on examples in the Department of Special Collections at the University of Notre Dame | Culture |
| Col. Knox's Artillery Regiment | A group of living history interpreters who participate in battle demonstrations for the public. | Living History |
| The Coldstream Regiment of Foot Guards 1815 | "We are a drill display and living history society representing Monck's Regiment (and its descendents) and currently specialising in the Napoleonic period." | Living History |
| The Colonel's Company of the Thirty-Third Foot | A re-created company of one of the finest British marching Regiments to serve King George during the American War for Independence. | Living History |
| Colonial America Maps | From the Rare Map Collection, Hargrett Rare Book and Manuscript Library, University of Georgia | Documents |
| Colonial Currency | Study of Colonial Currency | Culture |
| The Colonial Living History Alliance | Focuses on Farmers, Shopkeepers, Tavernkeepers, Midwives and other civillians in the Living History/Reenactment community. | Living History |
| Colonial National Historic Park (Virginia) | Site of Yorktown Battlefield, the final major battle of the American Revolutionary War in 1781 | Historic Sites |
| The Colonial Navy of Massachusetts | Recreated unit teaches history and continues the heritage of original navy. | Living History |
| Colonial Williamsburg (Virginia) | Website of the restored colonial capital. | Historic Sites |
| Conder Token Collectors' Club | "Welcoming all collectors of 18th century British tradesmen's tokens" | Culture |
| The Conestoga Area Historical Society (Pennsylvania) | Preserving the history of the Pennsylvania townships of Conestoga, Manor, Martic, Pequea as well as Millersville and Washington Borough. | Societies |
| Confessions of a CI-Devant | "Musings on History, Life, Literature, Movies, Art and Merriment" | Blogs |
| Connected Histories | "Sources for Building British History, 1500-1900" | Culture |
| Connecticut Historical Society (Connecticut) | A non-profit museum, library, and education center. | Societies |
| The Constitutional Sources Project | The free online library of constitutional source documents | Documents |
| Contemporary Jacobean Society | Studies of Webster, Ford, Shakespeare, Dekker, Marston, et al. Gender and adaptation-history studies. | Blogs |
| The Continental Line | An educational organization of recreated units representing many units active during the American Revolution. | Living History |
| The Continental Marines | Based in Great Britain, they "have recreated the Marines as they appeared during the American War of Independence, based on descriptions from contemporary accounts and sources." | Living History |
| Conversion Narratives in Early Modern Europe | "The project team will uncover neglected resources, including letters, pictures, and interrogations, to shed light on the stories people told about their religious lives." | Blogs |
| Cornwall Iron Furnace (Pennsylvania) | America’s most complete charcoal fueled ironmaking complex. | Historic Sites |
| The Costumer's Manifesto: 18th Century Clothing | Extensive list of links to online resources for 18th Century clothing (17th & 19th century clothing on other pages) | Living History |
| Costumes, Cats and the 18th Century | "I love sewing, costumes and the fashions of the 18th century (and cats). " | Blogs |
| The Country Lady Antiques | website featuring early antiques, tour of our 18thc. home and our living history adventures | Culture |
| Cowpens National Battlefield (South Carolina) | On January 17, 1781, Daniel Morgan's colonials defeated Banister Tarletons force of British regulars here | Historic Sites |
| Crazy Concord Chicks | Eclectic blog on 18th-century America | Blogs |
| David Crockett State Park (Tennessee) | David Crockett State Park was dedicated in May of 1959, in honor of one of Tennessee's most famous native sons. | Historic Sites |
| Oliver Cromwell (New York) | The life of Oliver Cromwell in numbers | Historic Sites |
| Crossroads of the American Revolution National Heritage Area (New Jersey) | "the only state-wide non-profit organization established to offer a forum for new citizen initiatives on education, historical interpretation, site use and heritage tourism; and to raise popular appreciation of the historical significance of the American Revolution in New Jersey" | Historic Sites |
| Crown Point State Historic Site (New York) | At the outbreak of the war, colonists captured the fort, securing cannons and heavy ordnance; later occupied by General John Burgoynes army in 1777 | Historic Sites |
| Culture & Stuff | "dedicated to unearthing less familiar stories from the past, prancing in the footnotes of mostly Parisian history of the 17th and 18th centuries" | Blogs |
| The Cumberland County Historical Society (Pennsylvania) | "...dedicated to collecting, preserving and interpreting the rich history of Cumberland County." | Societies |
| A Cuppe of Newes | "Early Modern Studies at Exeter, Around the Southwest, and Beyond" | Blogs |
| The Cynic Sang | The (Un)Official Blog of the William Blake Archive | Blogs |
