Where is Rabeinu Gershom's commentary on the first half of Menachos [in the ancient editions]?
There are instances when I cannot use my Oz Vehadar edition of tractate Menachos, and thus I am forced1 into using an older edition, i.e. the old-fashioned Vilna printings2, from, like, two-thousand years ago. I noticed that unlike my shiny new copies of this tractate, which contain Rabeinu Gershom's running commentary throughout the entire tractate, the old versions seems to be lacking his holy words for about the first forty pages or so. Why is this?