The Viking Expeditions from Central Sweden (700-1000):

or Lars' undergraduate Honors Thesis.

Chapter 1: Introduction.
Chapter 2: Background.
Chapter 3: Contributing factors for the expeditions.
Chapter 4: Effects that the Expeditions had on the Svear.
Chapter 5: Summary.
Sources and Bibliography.

The sections are big text files. Combined, they are about 120K.
Also, I now realize that I didn't upload the final revision. Oops.

Here is a Map viewer (viewer by PARC Xerox, data provided by the U.S. Government) pointed at the Mälar river valley in Sweden. This show the current water levels in the Baltic, which are now very much lower than they were a thousand years ago. See chapter 2 for more information about the water levels.