The Coast Defense Stud Group offers lots of important research related to seacoast fortification.

The CDSG Press makes available a number of important historical documents and articles on the seacoast fortifications of the United States of America including: the CDSG collection of past journals and newsletters; reprints of key books, reports, and references; scanned copies of key reports and documents from the National Archives; and much more.

Please browse the Resource Menus to learn more.

The CDSG hosts an annual conference at important harbor defense locations around the United States, and organizes special tours to important fortification sites around the world.