Robert Ardrey

Thunder Rock

The Hunting Hypothesis

The Social Contract

The Territorial Imperative

African Genesis

The Brotherhood of Fear

The Hunting Hypothesis: A Personal Conclusion Concerning the Evolutionary Nature of Man: Robert Ardrey's Nature of Man Series, Volume 4 (Unabridged)

The Social Contract: A Personal Inquiry into the Evolutionary Sources of Order and Disorder: Robert Ardrey's Nature of Man Series Book 3 (Unabridged)

The Territorial Imperative: A Personal Inquiry into the Animal Origins of Property and Nations: Nature of Man, Book 2 (Unabridged)

African Genesis: A Personal Investigation into the Animal Origins and Nature of Man: Robert Ardrey's Nature of Man Series, Volume 1 (Unabridged)