| 2511 | Carte | SAL2.1 | Johannes Sarisberiensis | Policraticus | da |
| 2512 | Carte | DAM1.3 | Johannes von Damaskus | Genaue Darlegung des Orthodoxen Glaubens | da |
| 2513 | Carte | IOH1.1 | Johannis de Nova Domo | Tractatus de esse et essentia | da |
| 2514 | Carte | BUR4.4 | John Buridan | John Buridan: Sophisms on meaning and truth | da |
| 2515 | Carte | SCO1.11 | John Duns Scotus | On being and cognition: Ordinatio 1.3 | nu |
| 2516 | Carte | OAK1.1 | John H. Oakley andd Rebecca H. Sinos | The Wedding in Ancient Athens | nu |
| 2517 | Carte | SAL2.5 | John of Salisbury | Policraticus. The Stateman's Book | da |
| 2518 | Carte | WYC1.1 | John Wycliff | On Universals | da |
| 2519 | Carte | WYC1.2 | John Wycliff, Ivan J. Mueller (ed.) | Tractatus de universalibus | da |
| 2520 | Carte | JOL1.8 | Jolivet, Jean | Abelard ou la philosophie dans le langage | da |
