Source
Boundless vets and curates high-quality, openly licensed content from around the Internet. This particular resource used the following sources:
"All sizes | Mrs. Pankhurst in Wall St.
(LOC) | Flickr - Photo Sharing!."
http://www.flickr.com/photos/library_of_congress/2163792086/sizes/o/in/set-72157603624867509/
Flickr
Public domain.