(CIVIL WAR POSTAL COVERS). [360 Northern Postal Covers Related to the Civil War and Slavery]. New York, Boston, Philadelphia, etc. c. 1861-1865. Generally 5.75" x 3.25" with some varying in size. Light toning, but largely well preserved. Less than a dozen are addressed. Generally very good, housed in sheet protectors and modern binder. A remarkable collection of postal covers with such a singular focus. The graphics range from amusing caricature of Southern leaders and institutions to potent representations of slavery. Subjects in which there are quantities of covers include a dejected Jefferson Davis disguised, hung, trapped, and more; caricatures of the north and south, bold and ridiculous, respectively; slavery and slaves; views of northern cities and buildings.