The House of Cards - Spades Info
A collection of Spades links, as well as software for Windows, Macintosh, and online play.
thehouseofcards.com

Encyclopedia Britannica - Spades
Provides details about the classic trick-taking card game Spadesfrom the Encyclopedia Britannica. Topics include history of the game, rules, variants and more.
britannica.com

Spades - Wikipedia
Information about Spades, a partnership trick-taking card game, a descendant of the Whist family of card games.
en.wikipedia.org

Spadeology - The Spades Resource
Offers a study of the games of spades. Spades resource, rules, games, theory and more.
spadeology.com