Sheepshead

International Skat Players Association
Organizes tournaments and promotes the game worldwide, with local chapters in a dozen countries.
http://www.ispaworld.org/

The Rules of Skat
Scoring, bidding and special conventions.
http://home.att.net/~elinker/skat.html

Schafkopf Group
The rules, tactics and variations for the Sheepshead/Skat/Doppelkopf/Schafkopf game family.
http://www.pagat.com/schafk/

Schafskopf
Rules and strategy for the three-handed game variety.
http://www.robreid.com/schafskopf/

Sheepshead Association
Free group offering game rules, glossary, history, and related resources, with tournament and open play news.
http://www.sheepshead.org/

Sheepshead Central
News, tournament updates, event photos, online polls and an active message board.
http://groups.yahoo.com/group/sheepshead_central/

Sheepshead Home Page
The playing deck, rules, scoring, and strategy tips.
http://www.geocities.com/Colosseum/Park/3508/trump.html

Sheepshead Optional Doublers
Optional ways of scoring.
http://www.webspawner.com/users/sheepsheaddoubler/

Steiner's Sheepshead
A weekly tally of results from an ongoing Madison, Wisconsin game begun in 1996.
http://sheeps.pauer.us/