The copy, slightly imperfect, in the National Library, Paris, was purchased at Brussels in the early part of the century by M. de la Serna for 150 francs.
Les fais du Jason (4).
The perfect copy in the National Library, Paris, was purchased in 1808 by M. de la Serna for 2 louis from a stranger, who had obtained it for half that sum.
Propositio Johannis Russell (7).
The Althorpe copy formerly belonged to John Brand, and at the sale of his library the Marquis of Blandford bought it for £2, 5s. At the White Knights sale in 1819 Lord Spencer bought it for £126. The Earl of Leicester has the only other known copy. Both copies are perfect.
Infancia Salvatoris (8).
The only existing copy known is in the Royal University Library,