MapCape Henlopen and the Delaware Breakwater Scale 1:20,000. Title in lower margin: Delaware Breakwater. Facsim. of nautical chart originally "Published at Washington, D.C., November 1901 ..." Relief shown by shading and hachures. Depths shown by contours and soundings....
- Contributor: U.S. Coast and Geodetic Survey - National Ocean Survey
- Date: 1976