Alfred, Lord Tennyson
http://www.poetryfoundation.org/bio/alfred-tennyson
The Poetry Foundation's page on the author; a thorough biography and bibliography are included.
Alfred, Lord Tennyson
http://www.victorianweb.org/authors/tennyson/index.html
The Victorian Web's extremely useful and thorough guide to the poet and his poetry. An excellent resource.
Alfred, Lord Tennyson
http://www.britannica.com/EBchecked/topic/587422/Alfred-Lord-Tennyson
The Encyclopedia Britannica page on the poet.
Crimean War
http://www.britannica.com/EBchecked/topic/143040/Crimean-War
Encyclopedia Brittanica on the Crimean War in which the "Light Brigade" fought.
Lord Alfred Tennyson
http://www.online-literature.com/tennyson/
The Literature Network's page, with a short biography and links to major poems.
The Odyssey, Book IX
http://classics.mit.edu/Homer/odyssey.9.ix.html
The part of Homer's Odyssey where Odysseus (Ulysses) and his men meet the Lotus-eaters, "who did them no hurt, but gave them to eat of the lotus, which was so delicious that those who ate of it left off caring about home, and did not even want to go back and say what had happened to them, but were for staying and munching lotus with the Lotus-eater without thinking further of their return."
Princess Ida
http://diamond.boisestate.edu/gas/princess_ida/html/
"Princess Ida" information from the Gilbert and Sullivan Archive at Boise State University.