Jefferson Davis’ “Rise and Fall of the Confederate Government” is .99 on Kindle. Foote’s trilogy is superb. You cab get Clement Valandingham’s writings for free on Kindle. The guy was an honest genius. His speeches are 19th century syntax so there are lots of long sentences, but worth the work. It was clear why Lincoln hated him and had him exiled. “The Journal of Julia Legrande” is on Kindle. It covers the Union occupation of New Orleans. “The Diary of Mary Chestnut” is good, too.
I highly doubt that Lincoln gave Valandigham much thought. There were other things going on that demanded his attention.