Sermons From Science - Now known as Wonders of Science. One of the most popular attractions at the fair, which was also present at the Seattle, New York and Montreal world's fairs.

The Fair and the Falls - A summary of The Fair and the Falls—a scholarly book about Expo '74 by historian J. William T. Youngs, and his student assistants. Weighing in at over 600 pages, it's the most in-depth account ever of a world's fair held in the U.S.

Riverfront Park - The Spokane Parks Department's official site, showing what's happening on the Expo grounds today.

Friends of the Falls - A group working to preserve the gains made during Expo.

Expo Museum - Chat, news, features and the most complete set of world's fair links anywhere.

World's Fair Collectors Society - They Publish Fair News—a bi-monthly bulletin devoted to past, present and future world's fairs. They're also trying to put together a museum/research facility to house their thousands of world's fair items.

The British Empire Exhibition, 1924-25 - My other world's fair site. Still under heavy construction, but worth a look, I think.