General John C. Fremont declares martial law in Missouri and orders emancipation of slaves in the state
Former presidential candidate and now Union commander in Missouri, Major General John C. Frémont, declared martial law in the state. More contentiously, the proclamation also mandated the emancipation of all slaves held by those in rebellion. When President Lincoln later asked him to amend his order to comply with the First Confiscation Act, applying only to slaves forced into military labor, Frémont refused and Lincoln was forced to give him direct orders to suspend it on September 11, 1861. (By John Osborne)
Frank Moore, ed., The Rebellion Record: A Diary of American Events, with Documents, Narratives, Illustrative Incidents, Poetry, Etc. (New York: G.P.Putnam, 1862), III: 10.