A Treatise On Universal Algebra, With Applications: Scanned GIF images of the full text of this 1898 work by Whitehead. Part of the Cornell Library Historical Mathematics Monographs.
Religion in the Making: Text of four lectures delivered by Whitehead at King's Chapel, Boston, United States in 1926, examining the causes of humanity's pursuit of religion.
The Concept of Nature: Text of this 1920 work by Whitehead, with each chapter on a separate linked page.