ADDEC - The American Distance Education Consortium
An incredible list of sites and resources.
http://www.adec.edu/online-resources.html

Distance Education Program Resources
An amazing array of information for the US National Library of Medicine
http://www.nlm.nih.gov/bsd/dist_edu.html

Distance Education Resources
This rich site is designed to be a starting point for those interested in locating higher education distance learning resources. Includes: Articles, Listservs & Publications; Copyright, Intellectual Property & Legislation in Distance Education; E-Learning Providers, Networks & Support; Course Development Tools & Guides; Accessibility Issues in Distance Education; Resource Centers & Directories; Professional Associations & Organizations; Unaccredited Institutions & Distance Education Scams; Library Support for Distance Learning; Distance Education Support; and Other Ethics Resources.
http://www.web-miner.com/deindex.htm

The Distance Education Clearinghouse
The Distance Education Clearinghouse is a comprehensive and widely recognized web site bringing together distance education information from Wisconsin, national, and international sources. New information and resources are being added to the Distance Education Clearinghouse on a continual basis.
http://www.uwex.edu/disted/

Distance-Educator.com
The technological revolution has brought networked computing to training and education. This revolution has the potential to democratize learning and training. Distance-Educator.com has been involved in this revolution from the beginning and this is the place to start your search for any and everything related to distance education and elearning.
http://www.distance-educator.com/mod-htmlpages-display-pid-5.html

The Sloan Consortium
Sloan-C encourages the collaborative sharing of knowledge and effective practices to improve online education in learning effectiveness, access, affordability for learners and providers, and student and faculty satisfaction.
http://www.sloan-c.org/index.asp

USDLA
USDLA is committed to being the leading distance learning association in the United States and serves the needs of the distance learning community by providing advocacy, information, networking and opportunity.
http://www.usdla.org/