Possible Clues:

• Ending
• End gift after a literary one gets in
• A blessing, comprehending some litigation, for slaves
• A bachelor choosing to hide face in ban
• With 61-Across, goal of Frederick Douglass and Harriet Beecher Stowe
• Wielding the axe, maybe, and moving on to alibi!
• End of the act?
• There's no alibi to put out for the cancellation
• Obtain oil for cooking the chop?
• Eradication