Librarian in Black Blog – Sarah Houghton

HyperHistory Online is a world history site that I came across recently while searching for the answer to a reference question that came in through instant messaging.   

There is a huge amount of information here–short biographical sketches on famous people in history (browseable by time period or alphabetical index), timelines for world civilizations (browseable by time period), key historical events by year, and a decent collection of historical world maps.  A lot of things are cross hyperlinked, so you can get more information and move from one section of the site to another.