The Misguided Search for 'Homoeroticism': A Plea for Research on Friendship
- An essay discussing the debate over whether same-sex relationships in historical documents were gay relationships or nonsexual friendships, and arguing that historians often label relationships "gay" when the label is not warranted.
- http://www.androphile.org/preview/Library/Debate/Article3/Debate.htm

Iolaus: An Anthology of Friendship
- A reprint of a 1908 treatise on historical friendship customs.
- http://www.fordham.edu/halsall/pwh/iolaus.html

Xena and Gabrielle: A Revisitation of the Classic Romantic Friendship
- This site explores the history of "Romantic Friendship" (the 15th-through-19th-century practice of intense yet nonsexual same-sex love) and the possibility that television characters Xena and Gabrielle are practicing this custom.
- http://www.whoosh.org/issue14/johnson.html

Boston Marriage Links
- A page with many links relating to Boston Marriage, the 19th-century practice of women friends living together long-term.
- http://womenshistory.about.com/msubbosmarr.htm

The Importance of Friendships
- Scottish article about friendship and adoslescents.
- http://www.scre.ac.uk/rie/nl52/nl52shucksmith.html

Gale Encyclopedia of Psychology: Friendship
- Short encyclopedia article about friendship.
- http://www.findarticles.com/cf_dls/g2699/0004/2699000473/p1/article.jhtml