The ports of Duluth-Superior, Minn. and Wis., Two Harbors, Minn., and Ashland, Wis.
Subtitle: [Part 2]
By: prepared by the Board of Engineers for Rivers and Harbors.
Series: Its Port series ;; no. 49, rev. 1961; Port series (United States.  Board of Engineers for Rivers and Harbors) ;; no. 49. rev. 1961
Publisher: U.S. G.P.O.
Published: 1963
Place of publication: Washington
Language: eng
Number of pages: 92
Subjects: Harbors -- Minnesota -- Duluth; Harbors -- Wisconsin -- Superior; Harbors -- Minnesota -- Two Harbors; Harbors -- Wisconsin -- Ashland; Harbors -- Superior, Lake
Notes: Part 1, covering the Great Lakes, prepared by the Maritime Administration.