FLOOR PLANS & ART GUIDE
"Fifteen Heads to Decorate Libe Fresco; Models Being Cast by Edna Dunberg; Browsing Room Plans Discussed." Oregon Daily Emerald, February 14, 1936. Article notes that work started in December and that five heads had been cast to date.
Gabriel, Bob. "Faces on the Wall; From the '30s: The Tragic Tale of UO Student Edna Dunberg, Who Sculpted the Faces Shown Here."