Robert Grosseteste

Works by Robert Grosseteste
(public domain)
Die Philosophie des Robert Grosseteste, Bischofs von Lincoln (ed. Baur) – link
Epistolae (ed. Luard) – link
Carmina anglo-normannica (ed. Cooke) – link

Most of the scientific and philosophical works by Grosseteste has been recently edited (or is going to be edited soon), producing much more reliable critical editions than Baur’s.