Jumpola.com
Chuck Green's incredibly useful compendium of up-to-date links to high-quality design-related Web sites.

LetterHeadFonts.com
Wonderful, original display fonts, and a great source for design inspiration.

Replymailonline.com
A neat Web Service for creating quickly and accurately creating Business Reply Mail pieces on-line in PDF format.

Creativepro.com
Graphic design and printing-related news and software reviews.

istockphoto.com
Hundreds of thousands of very low-cost, high-res photos and EPS illustrations!

Infoplease.com
A treasure trove of almanacs on every topic under the sun. Particularly useful for looking up the inventor of chewing gum or the population of Des Moines.

digital-vector-maps.com
Very low cost, high detail, layered, editable vector maps in Illustrator format.

MapResources.com
A vendor of high-quality, editable maps for virtually any country, state, or geographic region, as well as many cities. Locate the map you need, purchase it with a credit card, download your purchase, and edit or customize the map in Illustrator, FreeHand, or CorelDRAW.

myfonts.com
Check out the "WhatTheFont" service for automatic font identification.

Symbols.com
An online guide with examples, explanation, and history of 2500 signs & symbols. You can search by shape to find the meaning of a symbol, or by word to find a symbol for a certain meaning.

Bartleby.com
The complete text of five essential tools for good business writing and editing: The Elements of Style by William Strunk; The American Heritage Book of English Usage; Simpson's Contemporary Quotations; Roget's II, the New Thesaurus; and The American Heritage Dictionary of the English Language.