Before the end of 1478 Caxton had printed about twenty-one books. Of these sixteen were small works, all containing less than fifty leaves; of the others the most important is the first edition of the _Canterbury Tales_, of which there is, I think, no perfect copy. Blades speaks of a fine perfect copy in the library of Merton College, Oxford, and remarks also that Dibdin ignorantly spoke of it as imperfect. In Dibdin’s time, however, it certainly was imperfect, for I have seen some notes of Lord Spencer’s referring to his having sent some leaves from an imperfect copy to the college to assist them in perfecting their own, a courtesy which they repaid by presenting to the library at Althorp their duplicate and only other known copy of _Wednesday’s Fast_ printed by W. de Worde in 1532. Among the other books of the period of special interest is the _Propositio Johannis Russell_, which has often been ascribed to the Bruges press, as the speech of which it consists was delivered in the Low Countries. Lord Spencer’s copy had a curious history. It is bound up in a volume of English and Latin MSS., and in the Brand sale in 1807 the volume appeared among the MSS., with a note, “A work on Theology and Religion with five leaves at the end, a very great curiosity, very early printed on wooden blocks, or type.” It was bought by the Marquis of Blandford for forty-five shillings, and at his sale ten years after cost Lord Spencer £126. Another interesting book is the _Infancia Salvatoris_, of which the only known copy is at Göttingen, being one of the two unique Caxtons which are in foreign libraries. It was originally in the Harleian Library, which was sold entire to Osborne the bookseller, and was bought with many other books for the Göttingen University. It is in its old red Harleian binding, with Osborne’s price, fifteen shillings marked inside, and the note of the Göttingen librarian: “aus dem Katalogen Thomas Osborne in London 12 Maii 1749 (No. 4179) erkauft.”