Thanks to Thomas Osborne at Center for Thomistic Studies at the University of St Thomas, Houston, for a link to the Commentaria of St Bonaventure on Book 1 of the Sentences, which has both the Latin and the English. Click here to go to the commentary on Book 1. Other translation work is in progress. And since the Franciscans were responsible for the critical edition on Peter Lombard's Libri sententiarum, you can find out about that, here.