Friends of Fort Griswold
- Photos, history, fort map and related information.
- http://www.fortfriends.org/FORT_GRISWOLD/FortGriswold.htm

Fort Griswold Battlefield State Park
- Information on history and activities at historic fort museum.
- http://www.ct.gov/dep/cwp/view.asp?a=2716&q=325198&depNav_GID=1650

Fort Griswold
- Historical information on the fort plus early plan illustration and contemporary color photograph.
- http://www.billmemorial.org/griswold.htm

Plan of Fort Griswold c1781
- Top view of fort layout, with handwritten notations, c1781, from the Library of Congress Geography and Map Division.
- http://lcweb2.loc.gov/cgi-bin/map_item.pl?data=/gmd378/g3784/g3784n/ar102600.sid&style=gmd&itemLink=D?gmd:15:./temp/~ammem_3PxK::&title=Fort-Griswold.+

Fort Griswold Battlefield State Park Foundation, Inc.
- Organized to preserve, restore, maintain and promote the Fort Griswold Battlefield State Park, in cooperation with the State of Connecticut Department of Environmental Protection.
- http://www.revwar.com/ftgriswold/friends/

Fort Griswold State Park and Monument
- Contemporary color photograph and overview of the park.
- http://www.conncoll.edu/academics/departments/humandev/simplegifts/fort_griswold.htm

A Narrative of the Capture of Fort Griswold
- As related in 1856 by an eyewitness of the scene.
- http://freepages.genealogy.rootsweb.com/~gmasue/griswold.htm