Updated URLs for the pictures, courtesy of the Internet Archive's Wayback Machine: * <https://web.archive.org/web/20070621085137/https://time.com/time/covers/0,16641,1101590706,00.html> * <https://web.archive.org/web/20071006015318/http://www.nefsc.noaa.gov/history/timeline/1920.html> * <https://web.archive.org/web/20071006092549/http://www.whoi.edu/science/PO/people/mmccartney/iselin.html>