Here are two excerpts from Lincoln’s 1863 founding a national Thanksgiving Day and his 1864 followup.
“In the midst of a civil war of unequaled magnitude and severity, which has sometimes seemed to foreign states to invite and provoke their aggressions, peace has been preserved with all nations, order has been maintained, the laws have been respected and obeyed, and harmony has prevailed everywhere, except in the theater of military conflict; while that theater has been greatly contracted by the advancing armies and navies of the Union.
“Needful diversions of wealth and of strength from the fields of peaceful industry to the national defense have not arrested the plow, the shuttle, or the ship; the ax has enlarged the borders of our settlements, and the mines, as well of iron and coal as of the precious metals, have yielded even more abundantly than heretofore. Population has steadily increased, notwithstanding the waste that has been made in the camp, the siege, and the battlefield, and the country, rejoicing in the consciousness of augmented strength and vigor, is permitted to expect continuance of years with large increase of freedom.”