Years ago, as a conservatory student, I played the Sor sonata op.15b. At the time I played a modern edition, by Scheit (if I remember...)
I think this piece worths a more mature study, and I started digging in facsimiles.
I would like to know if the Salvador Castro version published in his "Journal de Musique Etrangère" is a good source. There are some differences between this edition (the first) and by Meissonier. Generally speaking, is Castro a reliable source or he was somewhat "creative" regarding the pieces of other composers published in the Journal?