Dialogweb allows you to access a collection of over 900 databases. The CARL Uncover Database includes more than 7 million articles in English from 17,000 periodicals, with 5,000 more added each day. You can search for free but have to pay the if you order an article. They have literally millions of pictures from decades of photo-journalism. As a registered user you can browse this collection, get all the neccessary information about the photos and purchase licenses.
Registration is free and they also offer a guided tour for guest.
Information Retrieval GovBot accesses well over 1 million pages of information and and is particularly useful for finding out about legislation, court decisions, and regulations.