September 10, 2013: added Camp Shelby, Camp White Sulphur Springs. Revised Civil War Defenses of Camden.
April 1, 2013: added Fairfield Powder House.
DISTRICT OF COLUMBIA
December 30, 2012: added Fort Mount Venture, Bosomworth's Fort. Revised Fort St. Simons.
May 2, 2013: updated Robert Carr's Fort.
May 13, 2013: added Pioneer Forts of the Little River Frontier.
January 5, 2013: added Perrot's Fort.
January 5, 2013: added Hartley Fort, Mines of Spain, Fort Eads, Camp Buckner, Fort Robinson, Montbrun's Fort, Farmington Encampment, Fort Crawford (a), Fort Gillespie, Fort Crawford (b), Fort St. Louis, Fort Crawford (c), Fort Confederation, Irvington Fort, Algona Fort, Spirit Lake Fort (1), Purdy's Fort, Waubonsie's Fort.
Revised Fort Atkinson, Fort Madison, Fort Sanford, Northern Border Brigade Defenses.
December 29, 2013: added Plymouth Fort, Lexington Fort, Camp Sackett, Lane's Fort (2), Fort Montgomery (1), Fort Row, Fort Floyd, Fossil Creek Station. Revised Fort Titus, Fort Zarah.
April 26, 2013: revised Camp Irvine with info provided by Louis Mosier.
April 26, 2013: added Camp Stevens with info provided by Craig Rhodes.
April 1, 2013: added Hallowell Powder House.
September 6, 2013: added South Berwick Powder House.
April 1, 2013: added Cambridgeport Powder Magazine, Somerville Powder House, Plymouth Powder House.
September 6, 2013: added Haverhill Powder House, Concord Powder House, Manchester Powder House, Dedham Powder House, Milton Powder House, Harwich Powder House, North Attleboro Powder House, Harvard Powder House, Bolton Powder House, Oxford Powder House.
December 27, 2013: added Brimfield Forts, Granville Garrison Houses, Blandford Fort.
May 24, 2013: added Old Spanish Fort, Fort McKean. Revised St. Louis Arsenal, Civil War Defenses of St. Louis, Jefferson Barracks, Fort Insley, Fort Hamer, Fort Curtis (2), Camp Clark.
January 5, 2013: added Cantonment Barbour. Revised Fort Atkinson, Cabanné's Post, Fort Lisa, Pilcher's Post.
July 16, 2013: added Lincoln Arsenal.
October 23, 2013: added Camp Bassett, Manzano Torreón, Quarai Torreón, Abo Plazuela. Revised Fort Butler, Fort Marcy.
October 12, 2013: added Och's Fort, Fort Mike, Fort Klock (3), Fort Bell, Herkimer's Home, Fort Countryman, Fort Dieffendorf, Paris' Mill Blockhouse, Bowman's Creek Blockhouse, Fort Loucks, Fort Dievendorf, Fort Putman, Fort Gile, Viele's Fort, Fort Fisher, Heidman's Fort, Shaffer's Fort, Cooperstown Blockhouses with information provided by Ken Johnson. Added and revised Lower Mohawk Castles 1-7, Middle Mohawk Castles 1-4, Upper Mohawk Castles 1-8. Revised Fort Hendrick, Fort Canajoharie, Fort Plain, Fort Ehle, Fort Van Alstyne, Fort Lewis (1), Schoharie Blockhouse.
December 26, 2013: added Camp Chemung. Revised Fort Schlosser, Fort Niagara, Fort Schuyler (2).
December 27, 2013: added William Johnson's Fort, Salisbury CSA Arsenal, Confederate Laboratory, Asheville Confederate Armory. Revised Camp Polk, Tannenbaum Encampment, Salisbury Military Prison, Camp Greene.
NORTHERN MARIANA ISLANDS
April 24, 2013: added Camp Mississinewa, Camp Sulphur Springs, Camp Maple Swamp.
January 12, 2013: revised Canton Island, Christmas Island defenses.
PANAMA CANAL ZONE
December 30, 2012: added Stono Bridge Fort, Edisto Island Lookout Post (1), Otter Island Lookout Post, Ashepoo Fort, St. Phillips Point Lookout, Water Passage Fort (1), Bedon's Fort, Barker's Fort, Francis' Fort, Murray's Fort, Stevens Creek Fort, Long Canes Fort, Fort Adventure, Fort Boone (1), Wofford's Fort, Fletchall's Fort, Lee's Fort, Lyle's Fort, Nixon's Fort, Raiford's Fort, Pearson's Fort, Catawba Fort, Helm's Fort, Dryer's Fort, Turner's Fort, Fort Bull (1). Revised Richbourg's Fort, Cattell's Fort, Fenwick's Fort.
U.S. VIRGIN ISLANDS
April 24, 2013: added Camp Carondelet, Neabsco Creek Encampment.
January 5, 2013: added Fort Vaudreuil, LaSalle's Fort. Revised Prairie du Chien Post, Fort St. Pierre.
July 29, 2013: added Sieur de Chauffours' Fort.
August 1, 2013: added Point Verde Battery, Renews Battery. Revised Colonial Forts of Placentia.
August 27, 2013: added: Trepassey Battery, Fogo Battery.
NORTH WEST TERRITORIES
PRINCE EDWARD ISLAND
ST. PIERRE and MIQUELON
CANADIAN SHIPS and SHIPYARDS