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The Harbor Defenses of the Delaware

FORT MOTT/ Finns Point, N.J./ 1900/ state park/ KKK

Arnold/3/12″/DC/1899-1943
Harker/3/10″/DC/1899-1941 /guns and carr to Canada, guns still at location in Canada
Gregg/2/5″/P/1901-1910
Krayenbuhl/2/5″ /BP/1900-1918
Edwards/2/3″/CM/1902-1920

FORT DELAWARE/ Pea Patch Island/ 1847/ state park /MC/ KKK

Torbert/3/12″/DC/1901-194?/guns to Battery Reed, Puerto Rico
Dodd/2/4.7″/A/1899-1918/
Hentig/2/3″/P/1901-1942
Alburtis/2/3″/MP/1901-1920
Allen/2/3″/MP/1901-1920

FORT DuPONT/ Delaware City, Del. /1896 /assorted public agencies, state park /MD, MC/ KKKK

Rodney/8/12″/M/1900-1941
Best/8/12″/M/1900-1941
Read/2/12″/BC/1899-1918/emplacements split, Btty Gibson located between
Gibson/2/8″ /DC/1899-1917/one structure […]

dev2026-05-26T17:11:05+00:00U.S. Mid-Atlantic Coast|

FORT HOWARD/ North Point/ 1900-(1928)/VA hospital, county park/ MD, MC/ KKKK

Key /8/12″/M/1900-1927/
Stricker/2/12″/DC/1899-1918
Nicholson/2/6″/DC/1900-1927
Harris/2/5″/BP/1900-1917
Clagett/2/3″/MP/1901-1920
Lazear/2/3″/MP/1900-1920/destroyed

FORT CARROLL/ Soller’s Point Flats/1848-(1928)/ private/ KK

Towson/2/12″/BC/1900-1918/
Heart/2/5″ /BP/1900-1917
Augustin/2/3″/MP/1900-1920

FORT ARMISTEAD/ Hawkins Point/ 1896-(1928) /city park /MC/ KK

Winchester/1/12″/DC/1900-1918
McFarland/3/8″/DC/1900-1917
Irons/2/4.7″/A/1900-1913
Mudge/2/3″/MP/1901-1920/partially destroyed

FORT SMALLWOOD/ Rock Point/ 1890-(1928)/ city park/ K

Hartshorne/2/6″/DC/1900-1927
Sykes/2/3″/P/1905-1927/destroyed

Baltimore, MD: 1921 Maps PDF (218K) 6 pages $0.30 More info […]

dev2026-05-26T17:12:08+00:00U.S. Mid-Atlantic Coast|

FORT WASHINGTON/ east bank, MD/ 1814-(1928) 1947/ Capital National Park Area/ MD, MC/ KKK

Meigs/8/12″/M/1902-1914
Decatur/2/10″/DC/1899-1918
Emory/2/10″/DC/1898-1929
Humphreys/2/10″/DC /1899-1929
Water/1/10″/BC/1898-1898
Wilkin/2/6″/DC/1902-1928
White/2/4″/P/1899-1921
Smith/2/3″/MP/1903-1920
Many/2/3″/P/1905-1928

FORT HUNT west bank, VA 1899-(1928)1933 Capital National Park Area KK

Mount Vernon/3/8″/DC/1898-1917
Porter/1/5″/BP/1901-1917
Robinson/1/5″/BP/1901-1917
Sater/3/3″/MP/1904-1920

Potomac River, MD & VA: 1921 Maps PDF (293K) 9 pages $0.45 More info

dev2026-05-26T17:12:56+00:00U.S. Mid-Atlantic Coast|

The Harbor Defenses of Chesapeake Bay

Chesapeake Bay Virginia CDSG 2018 Conference Documents for downloading. These are large files, either zip files or PDFs. Click the links to download and be sure to save them to your computer!

1921 Maps PDF (428K) 10 pages
CB Maps (zip file 6.6 MB)
CB Projects/Annexes/Supplements 1930-1946 (zip file […]

dev2026-05-26T17:14:41+00:00U.S. Mid-Atlantic Coast|

FORT BALDWIN /Sabino Head /1905 – 1928 /state park /MC (improvised)

unnamed / 1-8″ / Rod / 1899-1910 / at Fort Popham
Hardman / 1-6″ / DC / 1908-1917
Hawley / 2-6″ / P / 1908-1924 / mod. for 155 mm gun empl, WWII
Cogan / 2-3″ / P / 1908-1924
unnamed / […]

dev2026-05-26T15:40:52+00:00U.S. North Atlantic Coast|

The Harbor Defenses of Portland

2023 CDSG Conference materials (click links to download zip files of documents) Updated March 22, 2023

All CDSG documents on HD Portland (1.3 GB): Portland-Kennebec.zip

Or download by sets:

[…]

dev2026-07-21T16:15:51+00:00U.S. North Atlantic Coast|

The Harbor Defenses of Portsmouth

FORT FOSTER /Gerrish Island /1900 /city park /KK

Bohlen /3- 10″ /DC /1901-1943 /partially buriedChapin /2- 3″ /P /1904-1943 / sod and sand cover removed
#205 /2 -6″ /SBC /1944 /NC
AMTB 952 /2- 90 mm /F /1943-1946 / one block remains in floor of shelter

FORT CONSTITUTION /Newcastle Is. /1798 /park & USCG /MD, MC /K

Farnsworth/ 2- 8″ […]

dev2026-05-26T15:50:39+00:00U.S. North Atlantic Coast|

The Harbor Defenses of Boston

Historic documentation for the 2025 CDSG Conference — Download zip file sets by clicking links below.

Boston RCWs: Set 1 = = = Set 2 === Set 3

Boston Other Documents: Maps, Battery correspondence files, Engineer notebook, and other files

Boston: QM building records

Boston Aerial photos: Set 1 = = Set […]

dev2026-05-26T15:53:38+00:00U.S. North Atlantic Coast|

The Harbor Defenses of New Bedford

Historic documentation for the 2025 CDSG Conference: RCWs, RCBs, maps, aerial photos, inspection reports, battery construction correspondence, quartermaster building records, engineer notebook, harbor defense project reports, and other material.

New Bedford Document Files

FORT RODMAN/ Clarke Point/ 1840-(1947)/ waste water treatment plant/ city park /MD, MC/ KKK

Milliken/ 2- 12″/ BCLR/ 1924-1946/ casemated-WWII
Walcott/ 1- 8″/ […]

dev2026-05-26T15:57:22+00:00U.S. North Atlantic Coast|

FORT CHURCH/ Sakonnet Point (3 sections)/ private club/private/private KK

Gray (#107)/ 2 -16″ /CBC/ 1942-1948/ West Res. partially buried, Sakonnet Golf Club
Reilly/ 2- 8″/ CBC/ 1942-1947 /East Res., buried
#212 /2-6″/ SBC/1943-1948/ South Res., Warren Point, private, built on
unnamed/ 2- 155 mm/ PM

FORT ADAMS/ Newport/ 1824/ state park, Navy housing/ MD, MC/ KKKK

Greene/ 8- 12″/ M/ 1898-1943/ […]

dev2026-05-26T15:55:52+00:00U.S. North Atlantic Coast|

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FORT MOTT/ Finns Point, N.J./ 1900/ state park/ KKK

FORT DELAWARE/ Pea Patch Island/ 1847/ state park /MC/ KKK

FORT DuPONT/ Delaware City, Del. /1896 /assorted public agencies, state park /MD, MC/ KKKK

FORT HOWARD/ North Point/ 1900-(1928)/VA hospital, county park/ MD, MC/ KKKK

FORT CARROLL/ Soller’s Point Flats/1848-(1928)/ private/ KK

FORT ARMISTEAD/ Hawkins Point/ 1896-(1928) /city park /MC/ KK

FORT SMALLWOOD/ Rock Point/ 1890-(1928)/ city park/ K

FORT WASHINGTON/ east bank, MD/ 1814-(1928) 1947/ Capital National Park Area/ MD, MC/ KKK

FORT HUNT west bank, VA 1899-(1928)1933 Capital National Park Area KK

FORT BALDWIN /Sabino Head /1905 – 1928 /state park /MC (improvised)

FORT RODMAN/ Clarke Point/ 1840-(1947)/ waste water treatment plant/ city park /MD, MC/ KKK

FORT CHURCH/ Sakonnet Point (3 sections)/ private club/private/private KK

Browse Membership Information

Learn about American Defenses

Access Historical Information

Browse
Membership
Information

Learn about
American
Defenses

Access
Historical
Information