Professional/membership organizations:
IAPRI (Int'l Assoc. of Packaging Research Institutes)
Western Packaging Association California Packaging Club
IoPP (Institute of Packaging Professionals)
Institute of Packaging Professionals - Golden Gate Chapter
TAPPI (Technical Association of the Pulp and Paper Industry)
FPA (Flexible Packaging Association)
ASTM (American Society for Testing Materials)
ISTA (International Safe Transit Association)
NWPCA (National Wooden Pallet and Container Association)
Packaging Machinery Manufacturers Institute - PMMI
ABRE (Brazilian Packaging Association)

California State University:
Industrial & Systems Engineering at SJSU
College of Engineering at SJSU
San Jose State University
CSU (California State University)

Industry/consultants:
ISE Unlimited NEW
Packaging Solutions Group (PSG) NEW
H.B. Tollette and Associates
Lansmont Corporation
Transport Packaging
THARCO
Westpak, Inc.
PackagingInfo.com - Links to lots of sites

Resources for packaging students and professionals:
HP Talk Pack
PackExpo
Environmental Packaging International

Other packaging programs:
School of Packaging at Michigan State University
Packaging Program at CalPoly, San Luis Obispo
Clemson University

Publications:
Packaging Today NEW
FDP (Food and Drug Packaging)
Packaging Digest
Packaging World Interactive
Packaging Network