As a home builder in Wilmington, North Carolina, we have constructed many styles of homes.  While doing research online concerning exterior elements of a classical revival home, we came across a website that we thought you may enjoy.  The website http://www.ontarioarchitecture.com/ has excellent photos and descriptions of architectural styles from many periods.  There is also a wonderful glossary of building terms relating to architectural elements.  The Ontario Architecture site was created by an associate of the building and construction department of Mohawk College in Hamilton, Ontario, Canada; however, many of the photos look like they could easily have been taken here in the Wilmington area!