Hackett Publishing Company, Inc. · University of Nebraska Press
| title | ISBN-13 | year of publication |
|---|---|---|
| Philosophical Essays | 978-0-8032-6225-6 | 1965 |
| Toward a New Sensibility: Essays of O. K. Bouwsma | 978-0-8032-6226-3 | 1982 |
| Without Proof or Evidence | 978-0-8032-6227-0 | 2004 |
| Wittgenstein Conversations, 1949-1951 | 978-0-87220-008-1 | 1986 |