| Brief Description | Link | Category |
| baseball history resource | http://www.baseball-almanac.com/ | historical organization - Art / Entert. |
| baseball history resource | http://www.baseballlibrary.com/ | historical organization - Art / Entert. |
| baseball history resource | http://www.blackbaseball.com/ | historical organization - Art / Entert. |
| Rock and Roll Hall of Fame and Museum | http://www.rockhall.com/home/ | historical organization - Art / Entert. |
| American Jewish Historical Society | http://www.ajhs.org/ | historical organization - Geneology |
| Columbus Citizens Foundation | http://www.columbuscitizensfd.org/pages/mainframeset.html | historical organization - Geneology |
| Ellis Island - NY Harbor | http://www.ellisislandrecords.org/ | historical organization - Geneology |
| New England Historical Genealogical Society | http://www.newenglandancestors.org/ | historical organization - Geneology |
| Brooklyn Historical Society | http://www.brooklynhistory.org/ | historical organization - State & Local |
| California Historical Society | http://www.californiahistoricalsociety.org/ | historical organization - State & Local |
| Chicago Historical Society | http://www.chicagohs.org/ | historical organization - State & Local |
| Connecticut Historical Society | http://www.chs.org/ | historical organization - State & Local |
| Colorado Historical Society | http://www.coloradohistory.org/ | historical organization - State & Local |
| Florida Historical site | http://www.floridamemory.com/ | historical organization - State & Local |
| Historical Society of Pennsylvania | http://www.hsp.org/ | historical organization - State & Local |
| Indiana Historical Society | http://www.indianahistory.org/ | historical organization - State & Local |
| New Jersey Historical Society | http://www.jerseyhistory.org/ | historical organization - State & Local |
| Kansas State Historical Society | http://www.kshs.org/ | historical organization - State & Local |
| Massachusetts Historical Society | http://www.masshist.org/welcome/ | historical organization - State & Local |
| Maryland Historical Society | http://www.mdhs.org/ | historical organization - State & Local |
| Minnesota Historical Society | http://www.mnhs.org/index.htm | historical organization - State & Local |
| Montana Historical Society | http://www.montanahistoricalsociety.org/ | historical organization - State & Local |
| New York Historical Society | http://www.nyhistory.org/ | historical organization - State & Local |
| Ohio Historical Society | http://www.ohiohistory.org/ | historical organization - State & Local |
| Oregon Historical Society | http://www.ohs.org/ | historical organization - State & Local |
| Virginia Historical Society | http://www.vahistorical.org/ | historical organization - State & Local |
| Wisconsin Historical Society | http://www.wisconsinhistory.org/ | historical organization - State & Local |
| Antique Automobile club | http://www.aaca.org/ | historical organization - Transportation |
| Erie, Lackawanna & Western, the Erie and the Erie Lackawanna railroads | http://www.erielackhs.org/ | historical organization - Transportation |
| Aviation history org. located in Canada | http://www.flight-history.com/ | historical organization - Transportation |
| London Transportation Museum | http://www.ltmuseum.co.uk/ | historical organization - Transportation |
| Railroad Hobbyist | http://www.nycsubway.org/ | historical organization - Transportation |
| Titanic Historical Society | http://www.titanic1.org/ | historical organization - Transportation |
| Educational institution devoted to the study on the uniforms of the US | http://company.military-historians.org/ | historical organization - War / Military |
| German U-Boat site | http://uboat.net/ | historical organization - War / Military |
| Women in the US Military (private - Capt. Barbara A. Wilson USAF ret.) | http://userpages.aug.com/captbarb/index.html | historical organization - War / Military |
| USAF 100th Bomber group | http://www.100thbg.com | historical organization - War / Military |
| 2d South Carolina Regiment - Revolutionary War Historical Group | http://www.2ndsc.org/ | historical organization - War / Military |
| Air America was a CIA - owned and - operated during the Cold War | http://www.air-america.org/ | historical organization - War / Military |
| US Revolution | http://www.bucklinsociety.net/ | historical organization - War / Military |
| Cedar Creek Battlefield-Middletown, VA | http://www.cedarcreekbattlefield.org/ | historical organization - War / Military |
| Belgian Center for Research / Battle of the Bulge | http://www.criba.be/index.php | historical organization - War / Military |
| Daughters of the American Revolution | http://www.dar.org | historical organization - War / Military |
| Gettysburg Discussion Group (nonprofit organization) | http://www.gdg.org | historical organization - War / Military |
| US Military History | http://www.grunts.net/ | historical organization - War / Military |
| Navy History | http://www.history.navy.mil | historical organization - War / Military |
| National Council of the Lewis & Clark Bicentennial | http://www.lewisandclark200.org/ | historical organization - War / Military |
| WWII - German POW Stalag Luft I | http://www.merkki.com/ | historical organization - War / Military |
| U.S. Army Ordnance Corps Museum at Aberdeen Proving Ground | http://www.ordmusfound.org/ | historical organization - War / Military |
| The Pearl Harbor History Associates (private non-profit) | http://www.pearlharborattacked.com/ | historical organization - War / Military |
| US Revolutionary War books | http://www.revwar75.com/ | historical organization - War / Military |
| 2d Virginia Regiment - Revolutionary War Historical Group | http://www.secondvirginia.org/ | historical organization - War / Military |
| Spanish American War reference | http://www.spanamwar.com/ | historical organization - War / Military |
| Sub Net Italia - Submarine reference | http://www.subnetitalia.it/home.htm | historical organization - War / Military |
| WWII- US Aricraft private registry | http://www.warbirdregistry.org/ | historical organization - War / Military |
| WASP- Women Pilots of WWII | http://www.wasp-wwii.org | historical organization - War / Military |