“It is a fact that the enslavement of human beings has so far infused its insidious poison into the very hearts of the Southern people, that they have come to believe and declare the evil of slavery to be a good, and to require the power of Government to be exerted to maintain, extend, and perpetuate an institution that enables thousands to sell their own children, to be enslaved, with all their posterity, into hopeless bondage....”

The founder of New York City’s Cooper Union for the Advancement of Science and Art echoes the language and logic of the Emancipation Proclamation (as well as citing some Southern pro-slavery arguments to demonstrate their ridiculousness) in this open letter to President Lincoln. Cooper and the Cooper Union had long been advocates of abolition and both Lincoln and Frederick Douglass had famously lectured at the institution.

“The will of the people is supreme.”

“The vital principle of [Lincoln’s] whole administration has been his recognition of the fact, that our Government is simply a machine for carrying into effect THE WILL OF THE PEOPLE.”

Featuring illustrations of Philadelphia Sanitary Fair Central buildings, and Generals Gouverneur Warren and Horatio Wright on the front page. “Belle Plain, Virginia General Grant’s Late Base of Supplies”; “Army of the Potomac—General Warren Rallying the Marylanders”; “President Lincoln and His Secretaries”; Centerfold: “Army of the Potomac—Struggle for the Salient, near Spottsylvania [sic], Virginia, May 12, 1864”; three illustrations of the environs of Spottsylvania [sic] Court House; “Sherman’s Advance—General Logan’s Skirmishes Advancing Toward: the Railroad at Resaca”; and “Sherman’s Advance—Position of Osterhau’s Division on Bald Hill.”

Collecting confiscated rebel cotton. Ironclad Keokuk sinking after the battle at Charleston. Pres. Lincoln, General Hooker, and their staff at a review of the Army of the Potomac. Bombardment of Fort Sumter.