Electronic Gneuss-Lapidge Book: Sudhoff (1917) Referenced in: facs: 831.4 - Herrnstein near Siegburg, Bibliothek der Grafen Nesselrode [formerly at Herten], 192, fols. 1-20 fig. 14 [fol. 15r] mss: 831.4 - Herrnstein near Siegburg, Bibliothek der Grafen Nesselrode [formerly at Herten], 192, fols. 1-20