General Map Of The United States Showing the area and extent of the Free & Slave-Holding States, and the Territories of the Union. Entered in Sta. Hall. London ... & according to an act of Congress ... 1857, by H.D. Rogers ... Massachusetts. London, John Murray, Albemarle Street, Edinburgh, W. & A.K. Johnston. Engraved by W. & A.K. Johnston, Edinburgh.