Originally Posted by Portia
something factually based without a lot of interpretation that he can tie his information together.
Some other possible resources which may of use for this purpose include:

- There are several different versions of history timecharts, including this, and this, depicting world history by illustrating concurrent events.

- The Hermes House Illustrated Encyclopedia, Exploring History

- The Hermes House Encyclopedia of Ancient History, which covers the stone age, ancient Egypt, Greece, Rome, Aztec & Mayan worlds, Inca world, the Chinese empire, and ancient Japan. There are several hands-on, step-by-step projects which guide children through cultural crafts.