| Capital: A Critical Analysis of Capitalist Production Marx, Karl (Frederick Engels, editor) / Used - Hardcover | 1st Edition | $2,750.00 |
| The Theory of Moral Sentiments Smith, Adam / Used - Hardcover | | $1,800.00 |
| Foundations of the Social Sciences, The Structure of Scientific Revolutions, Science and the Structure of Ethics, Theory of Valuation, (and) The Technique of Theory Construction (International Encyclopedia of Unified Science Volume II, Nos. 1-5) Neurath, Otto, Thomas S. Kuhn, Abraham Edel, John Dewey, (and) J.H. Woodger / Used - Hardcover | Ex-library | $1,200.00 |
| The Open Society and Its Enemies Popper, Karl R. / Used - Hardcover | 1st Edition Dust Jacket | $750.00 |
| The Lord of the Rings (The Fellowship of the Ring, The Two Towers, The Return of the King) Tolkien, J.R.R. / Used - Hardcover | Price-clipped 1st Edition Dust Jacket | $450.00 |
| An Essay Concerning Human Understanding, to which are now added I. An Analysis of Mr. Locke's Doctrine of Ideas, on a Large Sheet, II. A Defence of Mr. Locke's Opinion concerning personal Identity, with an Appendix, III. A Treatise on the Conduct of Understanding, IV. Some Thoughts concerning Reading and Study, for a Gentleman, V. Elements of Natural Philosophy, VI. A new Method of a Common-Place-Book, to which is prefixed The Life of the Author: Volume I, II and III Locke, John / Used - Hardcover | | $450.00 |
| The Constitution of Liberty Hayek, F.A. / Used - Hardcover | 1st Edition | $325.00 |
| The Copernican Revolution Kuhn, Thomas S. / Used - Hardcover | Price-clipped 1st Edition Near fine Dust Jacket | $275.00 |
| Essays Moral, Economical, and Political Bacon, Francis / Used - Hardcover | 1st Edition | $200.00 |
| Essays and Treatises on Various Subjects: with a Brief Sketch of the Author's Life and Writings, to which are added Dialogues Concerning Natural Religion Hume, David / Used - Hardcover | | $125.00 |
| Aesthetic Theory (Theory and History of Literature) Adorno, Theodor W. (Robert Hullot-Kentor, editor/translator) / Used - Hardcover | 1st Edition Near fine Dust Jacket | $125.00 |
| The Analysis of Matter Russell, Bertrand / Used - Hardcover | 1st Edition | $95.00 |
| Elements of Political Economy Mill, James / Used - Hardcover | | $90.00 |
| The World as Will and Representation, Volume I and II Schopenhauer, Arthur (E. F. J. Payne, translator) / Used - Hardcover | Dust Jacket | $75.00 |
| Voltaire and Rousseau Against the Atheists; or, Essays and Detached Passages from Those Writers, in Relation to the Being and Attributes of God Akerly, J., editor/translator / Used - Hardcover | 1st Edition | $75.00 |
| Capital_ A Critique of Political Economy: Volume II, The Process of Circulation of Capital Marx, Karl (Fredeick Engels, editor) / Used - Hardcover | | $75.00 |
| Anthem Rand, Ayn / Used - Hardcover | 1st Edition Dust Jacket | $65.00 |
| The Grundrisse Marx, Karl, and David McClellan, editor/translator / Used - Hardcover | 1st Edition Near fine Dust Jacket | $65.00 |
| Our Knowledge of the External World Russell, Bertrand / Used - Hardcover | Price-clipped Dust Jacket | $60.00 |
| Language and Myth Cassirer, Ernst (Sausanne K. Langer, translator) / Used - Hardcover | 1st Edition Dust Jacket | $60.00 |
| Appeal to Conservatives (Appel aux Conservateurs) Comte, Auguste / Used - Hardcover | | $55.00 |
| A System of Logic, Ratiocinative and Inductive; being a connected view of The Principles of Evidence and the Methods of Scientific Investigation Mill, John Stuart / Used - Hardcover | Ex-library | $55.00 |
| Essays and Apothegms of Francis Lord Bacon Buchan, John, editor and Introduction (and Francis Lord Bacon) / Used - Hardcover | 1st Edition | $50.00 |
| An Essay Concerning Human Understanding and A Treatise on the Conduct of the Understanding (Locke's Essays) Locke, John / Used - Hardcover | | $50.00 |