All the links and more below are available here: http://usacheckers.com/links.php

Here are some Checker Federation websites for everyone here.

Bellarussian Fed. http://belarus.fmjd.org/
Canadian Assoc. http://usacheckers.com/cca.php
Czech Fed. http://www.damweb.cz/
Czech Union. http://ceskauniedamy.com/
Dutch Fed. http://www.kndb.nl/
English Assoc. http://home.clara.net/davey/
Euro Confed. http://www.edc.org.pl/edc/
World Fed. http://www.fmjd.org/
German Assoc http://www.h4ns.net/checkers/gda/
Irish Fed. http://www.irishdraughts.org/
Polish Fed. http://www.ptw.weh.com.pl/
Portuguese Fed. http://fpdamas.home.sapo.pt/
Quebec Assoc. http://www.fqjr.qc.ca/dames/100/champ/champs.html

Realize that not all of these organizations cover the English/American style of checkers!

Again, all of these links and more at http://usacheckers.com/links.php.