| The Blue and Brown Books. WITTGENSTEIN, Ludwig. / Used - Hardcover | Athena Rare Books ABAA | 1st Edition Dust Jacket | $750.00 |
| The Blue and Brown Books Ludwig Wittgenstein / Used - Hardcover | APPLEDORE BOOKS, ABAA | Price-clipped 1st Edition Dust Jacket | $650.00 |
| Preliminary Studies for the "Philosophical Investigations", Generally Known as the Blue and Brown Books Wittgenstein, Ludwig / Used - Hardcover | Book Alley | 1st Edition Dust Jacket | $650.00 |
| Preliminary Studies for the "Philosophical Investigations" Generally Known as the Blue and Brown Books Wittgenstein, Ludwig / Used - Hardcover | Mullen Books, ABAA | 1st Edition | $600.00 |
| THE BLUE AND BROWN BOOKS Preliminary Studies for the 'Philosophical Investigations' generally known as The Blue and Brown Books. Wittgenstein, Ludwig. / Used - Hardcover | Antiquariat Michael Solder | | $517.89 |
| the Blue and Brown Books - Preliminary Studies for the "Philosophical Investigations" Ludwig Wittgenstein / Used - Hardcover | Aeon Bookstore | 1st Edition Dust Jacket | $425.00 |
| THE BLUE AND BROWN BOOKS; Preliminary Studies for the 'Philosophical Investigations' generally known as The Blue and Brown Books Ludwig Wittgenstein / Used - Hardcover | Rare Book Cellar | Dust Jacket | $386.95 |
| Preliminary Studies for the 'Philosophical Investigations' Generally Known as The Blue & Brown Books Ludwig Wittgenstein / Used - Hardcover | Moe's Books | 1st Edition Dust Jacket | $350.00 |
| The Blue and Brown Books Ludwig Wittgenstein / Used - Hardcover | North Books: Used & Rare | 1st Edition Dust Jacket | $300.00 |
| Preliminary Studies for The 'Philosophical Investigations" Generally known as The Blue & Brown Books Wittgenstein, Ludwig / Used - Hardcover | Benjamin Books | Price-clipped 1st Edition Dust Jacket | $300.00 |
| The Blue and Brown Books Wittgenstein, L. / Used - Hardcover | Aardvark Rare Books | | $285.76 |
| Preliminary Studies for the "Philosophical Investigations" Generally Known As The Blue and Brown Books Wittgenstein, Ludwig / Used - Hardcover | Pride and Prejudice-Books | 1st Edition | $204.00 |
| Preliminary Studies for The 'Philosophical Investigation' Generally Known as The Blue & Brown Books Wittgenstein, Ludwig / Used - Hardcover | Kevin T. Ransom- Bookseller | 1st Edition Dust Jacket | $200.00 |
| THE BLUE AND BROWN BOOKS Preliminary Studies for the 'Philosophical Investigations' generally known as The Blue and Brown Books Ludwig Wittgenstein / Used - Hardcover | HALCYON BOOKS | | $109.28 |
| Preliminary Studies for the "Philosophical Investigations": Generally Known as the Blue and Brown Books Wittgenstein, Ludwig / Used - Hardcover | Jay W. Nelson, Bookseller, IOBA | Dust Jacket | $95.00 |
| The Blue & Brown Books Wittgenstein, Ludwig / Used - Hardcover | Bookbid | Near fine Dust Jacket | $75.00 |
| The Blue and Brown Books Wittgenstein, Ludwig / Used - Hardcover | BBBooks | Dust Jacket | $65.97 |
| Preliminary studies for the 'Philosophical investigations',: Generally known as the Blue and Brown books Wittgenstein, Ludwig / Used - Hardcover | Pomfret Street Books | Dust Jacket | $65.00 |
| The Blue & Brown Books by Ludwig Wittgenstein 1960 Ludwig Wittgenstein / Used - Hardcover | Big Star Books | Dust Jacket | $64.00 |
| Preliminary Studies for the 'Philosophical Investigations' Generally known as The Blue and Brown Books. Wittgenstein, Ludwig. / Used - Hardcover | Much Ado Books | Near fine Dust Jacket | $61.85 |
| Preliminary studies for the "Philosophical investigations" : generally known as the Blue and Brown books / by Ludwig Wittgenstein Wittgenstein, Ludwig / Used - Hardcover | MW Books | Dust Jacket | $61.20 |
| Preliminary studies for the "Philosophical investigations" : generally known as the Blue and Brown books / by Ludwig Wittgenstein Wittgenstein, Ludwig / Used - Hardcover | MW Books Ltd. | Dust Jacket | $51.79 |