Walsby, Malcolm: The Printed Book in Brittany. 1484-1600. Leiden, Boston, 2011. (Library of the Written Word. 14. )

Walsh, James E.: A catalogue of the fifteenth-century printed books in the Harvard University Library. Vol. 1–5. Binghamton, N.Y., 1991–1997. [Online-Ressource: Bd 2] [Online-Ressource: Bd 3] [Online-Ressource: Bd 4] [Online-Ressource: Bd 5] (Medieval and Renaissance texts and Studies. 84. 97. 119. 150. 171. )

Walter, Joseph: Ville de Sélestat. Catalogue général de la Bibliothèque municipale. Sér. 1: Les livres imprimés, P. 3: Incunables et XVIe sècle. Colmar, 1929. [Online-Ressource]

Walter, Ludwig K.: Katalog der Wiegendrucke der Stiftsbibliothek zu Aschaffenburg . Würzburg, 1999. [Online-Ressource] (Quellen und Forschungen zur Geschichte des Bistums und Hochstifts Würzburg. 44. )

Walters, Henry: Incunabula typographica. A descriptive catalogue of the books printed in the fifteenth century <1460–1500> in the library of H. W. Balitmore, 1906. [Online-Ressource]