The Chaucer Review: An Indexed Bibliography (Vols. 1-30)

Gibson, Margaret. "Through the Looking Glass: A Gothic Ivory Mirror Case in the Liverpool Museum." 21 (1986): 213-16.
Numerous mirror caskets depict ladies who, after resisting for a little while, allow their knightly attackers into the castle or descend from the castle to their attackers. Though this motif appears on other works of art, no literary source has been found which would explain the persistence of this particular motif. This particular mirror case, however, depicts a four-part sequence different from other pieces. This difference suggests a possible literary source.