contemporary critic of Viollet-le-Duc; helped develop a chronology for Romanesque sculpture
Bazin 280; Cahn, Walter. "Henri Focillon." Medieval Scholarship: Biographical Studies on the Formation of a Discipline. Volume 3: Philosophy and the Arts. Edited by Helen Damico. Garland Reference Library of the Humanities 2110. New York: Garland Publishing, 2000, p. 265, mentioned.