Photius References

Freese, John Henry (1920) The library of Photius Vol. 1 - open access at archive.org

Hoeschel, David (1601) editio princeps (1st printed edition) of Bibliotheca of Photius I of Constantinople

Treadgold, W. T. (1977). The Preface of the “Bibliotheca” of Photius: Text, Translation, and Commentary. Dumbarton Oaks Papers, 31, 343–349.

The Life of Patriarch Photius at photius.com

Photius: the Manuscripts of the "Bibliotheca" at tertullian.org

Photius's Bibliotheca, the First Byzantine Encylopedia Circa 850 CE at historyofinformation.com

Introductions to various epitomes in Biblioteca by Photius - open access - in Greek and French

Photius: Bibliotheca -- Contents from Freese (1920) and Rene Henry - open access at tertullian.org