| Adams National Historical Park (Massachusetts) | John Adams' home. Includes Peacefield and the Stone Library. | Historic Sites |
| Samuel Adams: Assorted Works | Assorted works | Documents |
| John Adams: Official Papers | Official papers | Documents |
| Age of Discovery News | "devoted to sharing information related to exploration history, through a news-based blog and links to resources" | Blogs |
| Airs, Waters, Places | "The seventeenth-century environment" | Blogs |
| Alan's Factory Outlet: Colonial History: Farming and Daily Life | Lots of links to articles on different aspects of American colonial life. | Culture |
| An American Colonial Experience | An educational and theatrical organization created by Roger Cooper, a "reenactor" and amateur historian of the American Colonial and Revolutionary War period. | Living History |
| The American Colonist's Library | A treasury of primary source documents pertaining to early American history (500 BC - 1800 AD) | Documents |
| American Creation | A group blog to promote discussion, debate and insight into the history, particularly religious, of America's founding. | Blogs |
| American Duchess | "...a costume blog designed to educate and entertain those interested in learning more about the fashions of the 18th century and other periods of dress" | Blogs |
| American History Central | Online digital encyclopedia | Culture |
| American Origins 1600-1900 | Interactive exhibit by the National Portrait Gallery | Culture |
| American Revolution & Founding Era | Explores the critical formative years of the United States of America, from the days of colonial unrest through the American Revolution and into the Constitutional era and the War of 1812. | Blogs |
| The American Revolution and Maryland’s Press | Maryland State Archives: To study eighteenth century life and the advent of the American Revolution as reported in the Maryland Gazette. | Documents |
| American Revolution Blog | A Blog Dedicated to the American Revolution, American Colonization, and Early American History in General. | Blogs |
| The American Village Citizenship Trust (Alabama) | NAtionally Pioneering Civic Education Center & Historical Village: To strengthen and renew the foundations of American liberty and self-government | Historic Sites |
| AmericanLongrifles.org | Promote, preserve and support the traditional art and craft of building and using the American Longrifle. | Culture |
| Anchora | "The history and future of early modern books and their readers." | Blogs |
| The Androscoggin Historical Society (Maine) | "The discovery, preservation, and dissemination of knowledge about the history of Androscoggin County and the State of Maine." | Societies |
| Marie Antoinette's Gossip Guide to the 18th Century | "Secrets, rumors and scandals whispered throughout the age of Louis XVI" | Blogs |
| Arbuckles Fort (West Virginia) | Fort used to protect the western frontier | Historic Sites |
| Archiving Early America | "Your Window to Early America" | Culture |
| Arkansas Post National Memorial (Arkansas) | Site of the Colbert Incident in 1783 | Historic Sites |
| The Arlington Historical Society (Massachusetts) | To promote and encourage the knowledge of the history of the Town of Arlington and the preservation of its antiquities. | Societies |
| ar_1 | Interactive presentation of the American Revolution | Culture |
| A Jane Austen Gazetteer | "Virtually visit the real places that Jane Austen and her family inhabited in reality" | Blogs |
| Austen Only | "Jane Austen's life, times and works explained and discussed" | Blogs |
| The Jane Austen Society of North America (Arizona) | "...dedicated to the enjoyment and appreciation of Jane Austen and her writing" | Societies |
| Jane Austen Today | "...explores Jane Austen as we see her today in movies, print, sequels, web sites, and other modern day media." | Blogs |
| Jane Austen's Letters | "Jane Austen's Letters Annotated and Explained" | Blogs |
| Jane Austen's World | "...brings Jane Austen, her novels, and the Regency Period alive through food, dress, social customs, and other 19th C. historical details related to this topic" | Blogs |
| The Avalon Project: 18th-Century Documents | Documents from 1700-1799 in the Lillian Goldman Law Library | Documents |
