1503
1503 A.D Insider, A. Pianto, Gameguru Mania, Gamer's Hell, Gamespot, Gamespy.com, GameZone, Sunflowers: Anno 1503/1503 AD, Wargamerit Anno 1503/1503 A.D.
1602
About.com: 1602 A.D., GameSpot, GameZone, Sir Henry's 1602 A.D. Island Editor, Sunflowers: Anno 1602, The Wargamer
Anno Unlimited
Contains overviews, screenshots, tips, walkthroughs, and downloads.
Annopool
Offers downloads of scenarios, islands, utilities, and screenshots.