Joseph Warren Keifer 
Slavery and Four Years of War [EPUB ebook] 

This is a voluminous history written by a Union veteran that traces slavery in America and the way it brought about the Civil War and affected the course of the fighting. From the preface: “The book, having been written while the author was engaged in a somewhat active professional life, lacks that literary finish which results from much pruning and painstaking. He, however, offers no excuse for writing it, nor for its completion; he has presumed to nothing but the privilege of telling his own story in his own way. He has been at no time forgetful of the fact that he was a subordinate in a great conflict, and that other soldiers discharged their duties as faithfully as himself; and while no special favors are asked, he nevertheless opes that what he has written may be accepted as the testimony of one who entertains a justifiable pride in having been connected with large armies and a participant in important campaigns and great battles. He flatters himself that his summary of the political history of slavery in the United States, and of the important political events occurring upon the firing on Fort Sumter, and the account he has given of the several attempts to negotiate a peace before the final overthrow of the Confederate armies, will be of special interest to students of American history.”