#OTD in 1862 President Lincoln issued the Preliminary Emancipation Proclamation which stated if the states in rebellion did not join back with the Union by January 1, 1863, all enslaved people held in those states would be freed. He chose to issue the Preliminary Emancipation Proclamation five days after the Battle of Antietam. Although Maryland was part of the Union, it was also a slave-holding state, so the Emancipation Proclamation did not apply to Maryland. Enslaved people in Maryland were freed November 1, 1864, a few months before Congress passed the 13th Amendment. Image: Abraham Lincoln, unknown creator, c.1861-1865. Maryland Center for History and Culture, H. Furlong Baldwin Library, Portrait Vertical File Collection. #OnThisDay #MDHistory #MarylandHistory #EmancipationProclamation #CivilWarHistory #CivilWar #AbrahamLincoln