The portrait, taken in Washington’s Hartford, Connecticut, studio in 1846 or 1847, exudes an intensity consistent with the subject’s fanaticism. He appears very much as one might expect—angry and determined. In the image, Brown raises his right hand, as if taking an oath; in the other hand, he holds a banner thought to be the flag of the Subterranean Pass-Way, his militant alternative to the Underground Railroad.
What flag is that?
The Smithsonian says…