This week's TOTW is a Civil War era song written in 1862 by Henry Clay Work titled "Kingdom Coming".
It has also been known as "Lincoln's Gunboats" and "The Year of Jubilo"
Words that accompany the tune are written from the perspective of and in the dialect of freed slaves on a southern plantation.
As was the custom at the time there was no attempt to achieve political correctness in the lyrics.
The lyrics can be found here:
A search through youtube reveals many examples:
Pete Seeger, with lyrics: https://www.youtube.com/watch?v=76YMei5rJx8
Tom Berghan: https://www.youtube.com/watch?v=m7UiBC91VX0
Frank George, on fiddle: https://www.youtube.com/watch?v=cG57-vqbU1I
Josh Turknett: https://www.youtube.com/watch?v=6Jet3vNxNYM
Just to name a few.
The tune has been adapted for other purposes as well. I found a reference that stated the words had been changed for the movie "Meet me in Saint Louis" where it was sung by Judy Garland. Unfortunately, I was unable to find a recording to post.
Most of us (who are old enough) remember it even being used in old cartoons:
http://www.banjohangout.org/forum/post.asp?method=Topic&FORUM_ID=11
These days, it's not uncommon for it to be heard in an old-time jam in the Key of D