Figure 4. Letters of indulgence, from the so-called edition of thirty-one lines, printed at Mayence in the course of 1454. From Henri Bouchot 'The Printed Book' (1887), page 19, published size in Bouchot 10.9cm wide by 8.5cm high.


Figure 4.—Letters of indulgence, from the so-called edition of thirty-one lines, printed at Mayence in the course of 1454. Published size in Bouchot, 10.9cm wide by 8.5cm high.