Concept
Version 4
Created by Boundless
Invention of Paper
Source
Boundless vets and curates high-quality, openly licensed content from around the Internet. This particular resource used the following sources:
"494px-Chinese_hemp_paper_western_han.jpg."
https://commons.wikimedia.org/wiki/File:Chinese_hemp_paper_western_han.jpg
Wikimedia
GNU FDL 1.2.