| Numéro de répertoire | Référence bibliographique | Remarque |
|---|---|---|
| R(III)1978 | Wolf, II, 1937 A Descriptive Catalogue of the John Frederick Lewis Collection of European Manuscripts in the Free Library of Philadelphia | E. WOLF, II, A Descriptive Catalogue of the John Frederick Lewis Collection of European Manuscripts in the Free Library of Philadelphia, Philadelphia, 1937 |