Too much stuff comes up on this despite its being avery reasonable search. Here is a shorter hit list.
2009 OSINT Links Directory by Ben Benavides
2009 Handbook Online for Internet Tools and Resources for Creating Open Source Intelligence (OSINT) by Dr. Ran Hock, Chief Training Officer, Online Strategies, Inc. remains the best private sector offering.
Handbook: Election 2008 Annotated Bibliography on Reality
2004 Special Operations Forces OSINT Handbook (Strawman)
2000-2002 NATO OSINT Handbooks
Handbook: Open Source Intelligence 101 (2002)
2000 PRIMER on Open Sources & Methods