http://www.archives.gov/education/lessons/hawaii-petition/
http://www.ushistory.org/us/44b.asp
http://www.hawaiiforvisitors.com/about/annexation.htm
http://timerime.com/en/timeline/233392/The+Annexation+of+Hawaii/
http://libweb.hawaii.edu/digicoll/annexation/annexation.html