Encyclopedia Britannica - Slot Machine
Detailed information from the Encyclopedia Britannica about the slot machines used in playing Slots game. History, betting rules, equipment and more.
britannica.com

Slots Jackpots
Offers reviews of online slots games, live progressive jackpots tickers, player details and general slot machine information.
slotsjackpots.com

About.com - Slots
Provides a collection of resources about slots games and slot machines. Slot tips, hitting the jackpot, progressive slots, slot myths and more.
casinogambling.about.com

Slots - Wikipedia
Information about Slots, a casino gambling game involving a machine with three or more reels. Played using coins inserted into and retrieved from slots, hence the name Slot machines.
en.wikipedia.org