org/wiki/File:Classical_orders_from_the_Encyclopedie.png Date 1761 Source File:Classical_orders_from_the_Encyclopedie.png Author original converted to PNG and optimised
Source https://upload.wikimedia.org/wikipedia/commons/6/6a/Classical_orders_from_the_Encyclopedie.png Author Diderot et d'Alembert with text and arrow added