In response to my last post Al Mackey referenced a North and South magazine article from back in 2001 by William Harris on the Emancipation Proclamation. Al correctly noted that Harris’s article addresses the long-standing myth that the proclamation did not immediately free any slaves in the South. I’ve made use of this particular article (December 2001) on numerous occasions in my courses on the Civil War. What I especially like about the article is the accompanying map, which is incredibly helpful in visualizing the reach of the document.
You may also want to read a recent Disunion essay on emancipation along the Sea Islands of South Carolina by Blain Roberts and Ethan J. Kytle.