With some discussion of the Carolinas campaign coming up on the podcast, these are a couple of books I enjoyed that cover this time frame:
-Bentonville: The Final Battle of Sherman and Johnston - Hughes
This book is a detailed look at the battle of Bentonville, there are only a few works on this 3 day battle. Bentonville was Joe Johnston's last real offensive gasp as he scrapped together as much power as he could and struck Slocum's wing while it was marching isolated from Howard's wing. Johnston had a rag tag force at this point with a mix match of troops from various commands, as well as a number of senior generals including Bragg, Hardee, A.P. Stewart, W.B. Bate, Hampton and D.H. Hill. Panic by Bragg led to a poor deployment of the limited Confederate reserves on the first day, which likely limited the chances of success for Johnston. Reinforcements from Howard's wing reinforced Slocum and completed the victory on the 3rd day. Following the battle Johnston would write Lee, "Sherman's course cannot be hindered by the small force I have. I can do no more than annoy him. I respectfully suggest that it is no longer a question whether you leave present position; you have only to decide where to meet Sherman. I will be near him."
-The Battle of Monroe's Crossroads and the Civil War's Last Campaign - Wittenberg and Bradley
Monroe's Crossroads is the biggest source of bad blood between cavalry commanders Wade Hampton and Judson Kilpatrick. Hampton and his men were able to ambush Kilpatrick outside Fayetteville NC. Kilpatrick was seen fleeing from the initial assault into the nearby swamp in his undershirt, leading to the battle often being referred to as "Kilpatrick's Shirt-Tail Skedaddle".
-This Astounding Close - Bradley
This book is not about the battles but rather is about the final few weeks of the campaign including the surrender negotiations and the initial movement home of the troops. A great quote from Johnston is included in the book when he wrote early in the campaign, "When I learned that Sherman's army was marching through the Salkehatchie swamps, making its own corduroy road at the rate of a dozen miles a day or more, and bringing its artillery and wagons with it I made up my mind that there had been no such army in existence since the days of Julius Caesar." Included in the book is the back and forth of the surrender negotiations, Sherman's eventual falling out with both Stanton and Halleck over the initial terms, as well as Sherman's troops moving to the Grand Review. Sherman at one point would refer to Stanton, as "mean, scheming, vindictive politician who made it his business to rob military men of their glory."