Goff, F.R. Incunabula in American libraries, E-121
Copinger, W.A. Supplement to Hain's Repertorium bibliographicum, 6702*
Gesamtkatalog der Wiegendrucke, 9443
Catalogue of books printed in the XVth century now in the British Museum, VI, p. 888 (IB. 28358)
Incunabula short title catalogue, ie00121000