Principia typographica. : The block-books, or xylographic delineations of scripture history; issued in Holland, Flanders and Germany, during the fifteenth century, exemplified and considered in connexion with the origin of printing. To which is added an attempt to elucidate the character of the paper-marks of the period. A work contemplated by the late Samuel Sotheby, and carried out by his son, Samuel Leigh Sotheby .

v.i. Holland and the Low countries.--v.2. Germany.--v.3. Paper-marks. ; Mode of access: Internet. ; Of the 250 copies printed, 220 were sold at auction May 5, 1858.