sepia-toned picture of the backs of early 20th-century soldiers with text superimposed: “I have heard some of my townsmen say, “I should like to have them order me out to help put down an insurrection of the slaves, or to march to Mexico, — see if I would go;” and yet these very men have each, directly by their allegiance, and so indirectly, at least, by their money, furnished a substitute. Henry David Thoreau, “On the Duty of Civil Disobedience” (1849), nwtrcc.org/Thoreau200years
