Books about Plato -- Early works to 1800

six books of Proclus, the Platonic successor, on the theology of Plato (vol. 1 of 2) : translated from the Greek, to which a seventh book is added, in order to supply the deficiency of another book on this subject, which was written by Proclus, but since lost, also, a translation from the Greek of Proclus' Elements of theology, to which are added a translation of the treatise of Proclus, On providence and fate, a translation of extracts from his treatise, entitled, Ten doubts concerning providence, and a translation of extracts from his treatise on the subsistence of evil; as preserved in the Bibliotheca Gr. of Fabricus Proclus