BALTIMORE (AP) — Maryland is celebrating the 150th anniversary marking the end of slavery in the state, a milestone that came after the Emancipation Proclamation.

While President Abraham Lincoln signed the proclamation in January 1863, slavery remained in place for many states, including Maryland.

READ MORE: Two Charged In January Murder Of 35-Year-Old In Towson

Maryland amended its constitution on Nov. 1, 1864, more than a year before slavery was abolished nationwide with the 13th Amendment.

READ MORE: Man, 26, Hospitalized In West Baltimore Shooting; Police Say

This year, the Maryland tourism office is promoting a series of events to mark the end of slavery in the state. Annapolis is hosting commemorations through Saturday. Exhibits are also planned at Antietam National Battlefield, Benjamin Banneker Historical Park and elsewhere.

Montgomery County Parks will host a hike along the Underground Railroad and tours of a slave cabin Friday through Sunday.

MORE NEWS: Black Bear Sighting Causes Brief Scare At Westminster High School

(Copyright 2013 by The Associated Press. All Rights Reserved.)