Agincourt, History of Art by its Monuments; London.

Architectural Publication Society, Dictionary of Architecture; London.

Bosc, Dictionnaire raisonné d’architecture; Paris.

Durm and others, Handbuch der Architektur; Stuttgart. (This is an encyclopedic compendium of architectural knowledge in many volumes; the series not yet complete. It is referred to as the Hdbuch. d. Arch.)

Gwilt, Encyclopedia of Architecture; London.

Longfellow and Frothingham, Cyclopedia of Architecture in Italy and the Levant; New York.

Planat, Encyclopédie d’architecture; Paris.

Sturgis, Dictionary of Architecture and Building; New York.

General Handbooks and Histories.

Bühlmann, Die Architektur des klassischen Alterthums und der Renaissance; Stuttgart. (Also in English, published in New York.)