Emerson, R. W., & Villeroi, B. d. (1867). Subscription for the erection of a monument to the memory of the brave and unfortunate John Brown: Who perished on the scaffold, for the emancipation of the colored race, on the sixteenth of December, 1859. Philadelphia: Jones & Thacher, Printers.

Emerson, Ralph Waldo, and B. de Villeroi. Subscription for the Erection of a Monument to the Memory of the Brave and Unfortunate John Brown: Who Perished On the Scaffold, for the Emancipation of the Colored Race, On the Sixteenth of December, 1859. Philadelphia: Jones & Thacher, Printers, 1867.

Emerson, Ralph Waldo, and B. de Villeroi. Subscription for the Erection of a Monument to the Memory of the Brave and Unfortunate John Brown: Who Perished On the Scaffold, for the Emancipation of the Colored Race, On the Sixteenth of December, 1859. Philadelphia: Jones & Thacher, Printers, 1867.