Changes since 2004

In 2005 the five "tutorials" and five "supplements" were added. I also revised Charts 2, 5 a/b, and 14 based on the new information. Chart 14 will be revised again shortly. What I intend to do is post multiple versions of the Old Kingdom chronology. The reader can choose between them. The entire book needs some editing. There are a number of typos and in some places the content needs to be updated.