Books

The Landmark Thucydides: A Comprehensive Guide to the Peloponnesian War by Robert B. Strassler

The Peloponnesian War by Donald Kagan

A War Like No Other:  How the Athenians and Spartans Fought the Peloponnesian War by Victor Hanson

DVD

The Spartans presented by Bettany Hughes:

Timelines

Compare Ancient Greek chronology with Biblical history:
Timeline of Biblical and World Events

Another timeline including Ancient Greek and Old Testament dates for comparison:
Timeline of Old Testament History

Maps

An interactive map of the History of the Peloponnesian War. Click on cities for more detail:
Gutenkarte

A set of links to maps of Ancient Greece to explore:
Index of Maps of Ancient Greek World