http://www.agentquery.com/
(The internet's largest and most current database of literary agents)

http://www.larsen-pomada.com/lp/index.cfm
(3 Ways to Make Yourself Irresistible to Any Agent or Publisher)

http://www.agentresearch.com/
(Agent Research & Evaluation)

http://www.agentsassoc.co.uk/index.php/
(Association of Authors' Agents - UK)

http://aaronline.org/
(The Association of Authors' Representatives - USA)

http://www.authorlink.com/index.html
(AuthorLink)

http://www.sff.net/people/dan.perez/writing/agents.htm
(Dan Perez: Agent Advice)

http://www.sff.net/people/dan.perez/writing/agents.htm
(Durant Imboden- Literary Agents)

http://www.adlerbooks.com/mostask.html
(FAQ on Literary Agents and Publishing)

http://EveryoneWhosAnyone.com/
(Gerard Jones, Everyone Who's Anyone in Adult Trade Publishing)

http://www.guidetoliteraryagents.com/blog/
(Guide to Literary Agents)

http://www.horror.org/agents.htm
(Horror Writers Association Agents FAQ)

http://www.sfwa.org/2009/12/hunting-for-a-literary-agent-which-to-keep-and-which-to-shoot/
(Hunting for a Literary Agent) 

http://www.sfwriter.com/agent.htm
(Landing an Agent)

http://www.nataliercollins.com/agents.html
(Listing of Non-fee charging agents)

https://secure.infotoday.com/lmp/us/index_us.asp
(Literary Marketplace)

“http://www.nwu.org/nwu/index.php?cmd=showPage&page_id=1.5.1.7.7”
(National Writers Union- A Brief Guide to Researching Literary Agents)

http://mockingbird.creighton.edu/NCW/litag.htm
(Nebraska Center for Writers- Literary Agents)

http://pred-ed.com/
(Preditors and Editors)

http://www.writersservices.com/agent/index.htm
(Writer's Handbook 2003)

Links for Book Publishers:

http://www.lights.ca/publisher/bookfairs.html
(Book Fair listings)

http://www.internet-resources.com/writers/markets/online-guidelinesPUBLISHERS.htm
(Links to Publishers' Online Submission Guidelines)

https://secure.infotoday.com/lmp/us/index_us.asp
(Literary Marketplace)

http://www.lights.ca/publisher/
(Publishers' Catalogue Home Page)