Duluth Ship Canal (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "Duluth Ship Canal" in English language version.

refsWebsite

Global rank English rank

2duluthport.com

low place

low place

70^th place

63^rd place

212^th place

172^nd place

1books.google.com

3^rd place

3^rd place

books.google.com

Federal Writers' Project (1940). "Duluth–Superior Harbor". The WPA Guide to the Minnesota Arrowhead Country. Minnesota Historical Society. Retrieved September 17, 2021.

duluthport.com

"Duluth–Superior Harbor Statistics" (PDF). Duluth Seaway Port Authority. Retrieved 2012-04-27.
"Mr. Boeing's Canal" (PDF). Duluth Seaway Port Authority. 2004. Retrieved 2012-04-27.

loc.gov

hdl.loc.gov

Arkin, David Gerard (1987). "Site Plan of the Duluth Ship Canal". Historic American Engineering Record (Diagram). Washington, D.C.: Library of Congress. Retrieved September 17, 2021. HAER No. MN-10

tile.loc.gov

Demeter, C. Stephan (September 1993). "Duluth Ship Canal" (PDF). Historic American Engineering Record. Washington, D.C.: Library of Congress. Retrieved September 17, 2021.

noaa.gov

charts.noaa.gov

Chart 14975: Duluth–Superior Harbor (Map) (35th ed.). 1:15,000. Nautical chart. NOAA. December 2007.

nauticalcharts.noaa.gov

"Lake Superior: Charts 14966, 14975". United States Coast Pilot 6 (42nd ed.). NOAA: 434. 2012.