Concept
Version 14
Created by Boundless
The Rise of Unions
Knights of Labor seal
The official seal of the Knights of Labor, representing their mission statement.
Source
Boundless vets and curates high-quality, openly licensed content from around the Internet. This particular resource used the following sources:
"Knights of labor seal."
http://en.wikipedia.org/wiki/File:Knights_of_labor_seal.gif
Wikipedia
CC BY-SA.