Website image credits
CSSR May 2015 Header and background
adapted from Double-M (2010, June 28). Fig. 145 from Ernest A. Batchelder’s Design in Theory and Practice, Practiced in 1910. From Flickr with Creative Commons license at https://flic.kr/p/8e1eEY
Pillar image
from Therysma (2007, October 18). Ancient Greece 4. from Freeimages.http://www.freeimages.com/photo/891455