In "Scripta Minoa I", which appeared in 1909, he explained that the discovery of the Phaistos Disc in July 1908 had caused him to pull the book from the presses so that he could include the disk by permission, as it had not yet been published. On the next page he mentioned that he was also including by permission of Federico Halbherr of the Italian Mission in Crete unpublished tablets from Hagia Triada written in a linear script of "Class A". To what degree if any Halbherr was responsible for Evans' division of the "linear script" into "Class A" and "Class B" is not stated. The Knossos tablets were of Class B, so that Evans could have perceived Class A only in tablets from elsewhere, and so recently that he needed permission to include the examples.