Illuminated books of the Middle Ages /

by Calkins, Robert G.
Imprint 1983

A medieval treasury; an exhibition of medieval art from the third to the sixteenth century /

by Calkins, Robert G.
Imprint 1968

Programs of medieval illumination /

by Calkins, Robert G.
Imprint 1984

Monuments of medieval art /

by Calkins, Robert G.
Imprint 1985

Medieval architecture in Western Europe : from A.D. 300 to 1500 /

by Calkins, Robert G.
Imprint 1998