Brickset
Database of Lego sets from the 1970's onwards, including many promotional and special sets not listed elsewhere.
BrickShelf
Features a members photograph gallery, poll, search, and archives from Brickfest. Lego instruction and catalog scans available.
British Lego Catalogues
Covers for Lego 1971-76. Contact information available.
Everything Lego: Unofficial Collection of Links
Directory features informational, educational, shopping, computer, robotic, media, and fan sites.
Fibblesnork Lego Guide
Find Lego series, sets, and systems by type, year, and name. Ratings provided.
Frank's Lego Sites
Includes the Lego lexicon, an encyclopedia of Lego related words.
Lego Authority
Provides reviews of sets, links, and advice where to buy Lego toys.
Lego Maniacs' Guide
Hundreds of Lego set reviews, a directory of all Lego sites, creations, and games from Adequate.com.
Lego Photography
Photographing Lego models is not easy. For starters, the pieces are shiny and colors such as black are very difficult to develop. Includes tips and tutorials.
Lego Set Review Archive
Reviews of Lego sets as they appeared on rec.toys.lego. Includes history of review format, and related links.
Pause Magazine: Lego Reference Guide
Features set pictures, original creations, lists, articles, links, and general Lego information. Last updated in 1998.
Peeron Lego Inventories
Searchable database of pieces and sets including photographs of each.
The Construction Toy
Features detailed history of American Plastic bricks, building blocks, lincoln logs, Lego Technic and Model team sets.
Tore: Lego Ads
Old ads scanned from Swedish Disney comic magazines.