Designer Resources
Here are some links that designer(s) will find useful:

ADC-Art Directors Club
AIGA - The American Institute of Graphic Arts
Apple Computers
Adobe Systems
American Advertising Federation
American Institute of Graphic Arts
Before & After Design Magazine
Communication Arts Magazine
Comstock
Creative Circus, Inc.
Design Tools Monthly Newsletter
Desktop Publishing Clipart
Emigre, Inc - Digital Type Foundry
EyeWire
Food & Drug Packaging Guidelines
GATF - Graphic Arts Technical Foundation
Geoimagebank
Getty Images (Photodisc)
Graphic Design USA
I.D. Magazine
Images.Com - illustrations for advertising
LettError - Online Type & Free Font Resources
Mac Papers - Request Samples
Pantone® - The Power of Color
Picture Quest -
Metropolis OnLine Magazine - architecture, design
Print Image International
Stock Illustration, Spot Images, Stock Art
Template Paradise - Illustrator & Quark Templates
Xpresso Bar, a Quark User Resource

Other Resources
Here are some links that just about anyone can find usefull:

AdAge
AltaVista
Amazon.Com
Dogpile - Search Engine of Search Engines
Environmental Protection Agency
Excite
Federal Express
Federal Reserve System
Go To.com Search
Google
Internet Public Library
The Library of Congress
Looksmart - SearchLycos - Internet Guide
Lycos - Internet Guide
New York Stock Exchange
OSHA
Thomas Register of American Manufacturers
United States Postal Service
UPS
Wired Magazine
Yahoo!