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aoml.noaa.gov
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McCown, Sam (August 20, 2008). ""Perfect Storm" Damage Summary"(PDF). National Climatic Data Center. National Oceanic and Atmospheric Administration. Archived from the original(PDF) on September 6, 2021. Retrieved April 5, 2019.
National Climatic Data Center (August 20, 2008). "The Perfect Storm". National Oceanic and Atmospheric Administration. Archived from the original on January 9, 2017. Retrieved September 14, 2009.
Canadian Hurricane Centre (September 14, 2010). "1991-Unnamed "Perfect Storm"". Environment Canada. Archived from the original on October 5, 2013. Retrieved June 17, 2011.
National Climatic Data Center. "Unnamed Hurricane". National Oceanic and Atmospheric Administration. Archived from the original on December 7, 2013. Retrieved September 14, 2009.
Pasch, Richard; Avila, Lixion (March 26, 1992). "Atlantic Hurricane Season of 1980"(PDF). National Oceanic and Atmospheric Administration. p. 2686. Archived from the original(PDF) on December 7, 2010. Retrieved September 13, 2009.
Pelissier, Joseph (1991). "North Carolina Coastal Flood"(GIF). National Hurricane Center. Archived from the original on December 30, 2013. Retrieved June 16, 2011.
Hidlay, William C. (November 1, 1991). "Maine hit hard by storm". Bangor Daily News. Associated Press. Archived from the original on September 9, 2015. Retrieved July 3, 2011.