Boston Taking Records 1800 - The taking records (later called valuation records) are government records which give an accounting of Boston residents and the taxes they were assessed.
History Hub - is a research support community for everyone, including genealogists, historians,and citizen archivists - It's a useful tool for genealogical and historical questions (and more) that are frequently asked in various permeations. It brings together the knowledge of experts from NARA and LC and citizen experts who answer the questions on the site from their experiences and own research. There are areas that come up often— military history /records and genealogy and women’s rights and Native American sources.
HeritageQuest: Combines digital, searchable images of U.S. federal census records with the digitized version of the popular ProQuest Genealogy & Local History collection and other valuable content.
Massachusetts Archives - The Archives, a division of the Office of the Secretary of the Commonwealth, is the repository for Massachusetts records generated by state government. Archives holdings date from the beginning of the Massachusetts Bay Colony in 1628 and document the settlement of lands in Maine and Massachusetts, the arrival of immigrants, and the development of state government.
My Heritage - Focuses on genealogy community building and networking.
National Archives (United States) - wealth of information and websites