Encyclopedia Britannica
Encyclopedia Britannica: 300 Women Who Changed History: Liliuokalani
Encyclopaedia Britannica provides a biography of Liliuokalani, the first woman to be queen of Hawaii.
PBS
Pbs: American Experience: Hawaii's Last Queen: Liliuokalani's Musical Legacy
At this site from the American Experience film on Queen Liliuokalani, you can hear an audio clip of "Aloha Oe", one of the Queen's best known original melodies and see the other music she wrote honoring the Hawaiian musical tradition.