Concept
Version 9
Created by Boundless
Victory Columns under the Nervan-Antonines
Source
Boundless vets and curates high-quality, openly licensed content from around the Internet. This particular resource used the following sources:
"Relief Kolumna Trajana."
http://commons.wikimedia.org/wiki/File:Relief_Kolumna_Trajana.jpg
Wikimedia
CC BY-SA.