These images appeared in National Geographic in 1962 in an article "New Views of Medieval Europe" by Kenneth Setton. They are excerpted here to illustrate a discussion of these illustrations and their content in my Avatars of the Word (Cambridge: Harvard University Press, May 1998).
Alaric's Goths sack Rome (410 CE).
Attila and the Huns at their banqueting (c. 451 CE)
The Emperor Justinian berated by his wife Theodora (532 CE)
Cassiodorus shows visitors his monastery, c. 570 CE
Charlemagne contemplates the gift of an elephant from Harun-al-Raschid, c. 800 CE