Notes for Classical order
http://encyclopedia2.thefreedictionary.com/Classical+order http://ccat.sas.upenn.edu/george/vitruvius.html Images from De architectura
De architectura by Virtruvius promoted the architecture of Greek antiquity. Roman architecture soon moved on, with slenderer columns and more emphasis on decoration, new orders. Adopted the corinthian, rarely used in Greece...
Numerous architectural treatises were based in part or inspired by Vitruvius, beginning with Leon Battista Alberti's De re aedificatoria (1485). Brunelleschi, Palladio... Inigo Jones
See J. Summerson, Classical Language of Architecture (1966).