• publisher: Washington, Govt. Print. Off.
  • creator: United States. Board of Engineers for Rivers and Harbors
  • Keyword: Portland (Me.) Harbor. Portland (Me.) Commerce.
  • years: 1921.
  • pages: 64 p.
  • class: HE554.P84
  • notes: At head of title: War Department. Corps of Engineers, U.S. Army ...
  • download: pdf file