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

Encyclopedia Britannica - Pinochle
Detailed information about the classic card game Pinochle from the Encyclopedia Britannica. Including history of the game, basic rules, melding, scoring, with emphasis about the 2 main variants: Cutthroat Pinochle and Partnership Pinochle.
britannica.com

Board Game Geek - Pinochle
Provides a collection of information and resources related to Pinochle card game. General information, images, videos, discussion forums and more.
boardgamegeek.com

Pinochle - Wikipedia
Information about Pinochle, or Binocle, a trick-and-meld card game for 2 to 4 players, derived from the card game bezique.
en.wikipedia.org