Of the _Letters of Friendly Intercourse_, scarcely half appear in the most complete of the older printed editions,[31] but they have, not long since, been edited in full by Giuseppe Fracassetti, who includes no less than one hundred and twenty-eight never before printed. The _Epistolæ Variæ--Miscellaneous Letters_--are also to be found in his excellent edition.[32] The _Letters of Old Age_ were early printed in their entirety, but unfortunately have not been reproduced since 1581. If one would read them in the original he must still turn to the miserable Basle editions of the works, which would almost appear to have been printed by persons unfamiliar with the rudiments of Latin, so numerous and incredible are the typographical errors which not only try the reader's temper but often entirely obscure the meaning.
How far Petrarch modified the original form of the letters in editing them is an important question, but one upon which we have but little information. He says in the Preface that the unworthy expedient occurred to him of suppressing such letters as exhibited his past weakness, or so changing their order that he should at least appear in a more favourable light. But this, he decided, would be quite useless, since his friends possessed the properly dated originals. On the other hand, he certainly destroyed a large number of his papers. What canons he adopted in his selection we cannot determine, but obviously the temptation to exclude those which might seem to place him in a false position must have been almost irresistible. Moreover, he did not hesitate, as we have seen, in order to avoid repetition and monotony, to so alter the language that he felt it necessary to ask his friends, in some instances, to destroy their original copies lest they should be hurt by the changes he had made.
There seems to be no doubt that the _Letters of Friendly Intercourse_ are arranged in the codices, and published by Fracassetti, in the order in which Petrarch first placed them. His intention was to observe chronological sequence, for he says explicitly that with the exception of the letters to dead authors, which he put together at the end of the volume, almost all the rest remained in the order in which they were written.[33] While this is true in general, there are many obvious exceptions. Unfortunately he did not ordinarily indicate the year, but only the day and the month upon which he wrote. It is very probable, therefore, that in arranging the letters years later he was often unable to determine just where a letter belonged. Fracassetti has devoted a great deal of attention to establishing the dates, where it is possible,[34] and has in this way done much to make the course of the poet's life clearer.