Coast Defence Study Group (CDSG)

The Coast Defence Study Group CDSG is a non-profit 501(3)(c) tax-exempt corporation dedicated to the promotion of the study of coast defenses and fortifications—primarily but not exclusively those of the United States of America—their history, architecture, technology, and strategic and tactical employment. The purposes of the group include educational research and documentation, preservation of historic sites, site interpretation, and assistance to other organizations interested in the preservation and interpretation of coast defense sites.

The CDSG Press

The CDSG Press offers a number of key reprints and reference material essential for the study of American seacoast fortifications. Offerings include:

Please see our web site at for a complete listing and ordering details.

  • Back issues of our quarterly publications
  • Conference and Special Tour Handouts
  • CSDG Press Books & Reprints

Representative: Mr. Terrance McGovern