The letter of Peter Kaetz to Siberch, referred to earlier, is of the greatest interest. It is written on one side of an oblong piece of paper, with the address on the other side. Unfortunately parts of the ends of some of the lines are missing, making parts of certain sentences vague, especially at the beginning, but generally the meaning is fairly clear. It has been translated by Mr Hessels as follows: “Know, Jan Siborch, that I have received your letter as [well as specimens] of your type, and it is very good; if you can otherwise ... and conduct yourself well then you will get enough to print. So I remain still in London because my master comes; I expect him from day to day, therefore I cannot even know when I cross, but so soon as I cross I shall do the best that is in my power. Item, I have told Peter Rinck three or four times of the Pater noster, but he tells me that he cannot find it; and Gibkerken has not yet given Jacob Pastor the ring, but he carries it every day on his hand and he will not give it to Jacob Pastor. Item, I send you 25 prognostications and 3 New Testaments small. The prognostications cost one shilling sterling the 25, and the 3 New Testaments cost 2 shillings and 6 pence sterling, so there is still due to you, which I remain in your debt. I have no more New Testaments, otherwise I should have sent you more. I have nothing else to write except [to ask you to] deliver the accompanying parcel to Niclas, and greet Baetzken for me with your whole family, and do not forget yourself. Petrus Kaetz.” Among the fragments found with it was part of the manuscript copy of Croke’s book printed in May 1520, a sheet of the Papyrius Geminus printed in 1522, and two leaves of the Lily’s _Grammar_. The book in which they were found must have been bound after December 1522, but the tools on the binding are not those known to have been used by Siberch, and the book may have been bound after Siberch ceased work by someone occupying his old workshop or who had obtained his waste material. From internal evidence the letter would appear to have been written in 1521 just after Siberch had started printing, the reference to the excellence of the type, of which proofs had apparently been sent, and the remark by Kaetz that if Siberch conducted himself well he would get enough to print, both pointing to this conclusion. One small point may be noticed here in passing. The tone of the letter is that of an older to a younger man, or at any rate, of a man to one of his own age. Now in the colophons of books printed for Kaetz between 1523 and 1525 he is spoken of as “juvenis” and this may be taken as a slight argument for believing that in 1521 Siberch was a young man also.