Lincoln at Cooper Union explores Lincoln’s most influential and widely reported pre-presidential address—an extraordinary appeal by the western politician to the eastern elite that propelled him toward the Republican nomination for president. Delivered in New York in February 1860, the Cooper Union speech dispelled doubts about Lincoln’s suitability for the presidency and reassured conservatives of his moderation while reaffirming his opposition to slavery to Republican progressives. Award-winning Lincoln scholar Harold Holzer places Lincoln and his speech in the context of the times—an era of racism, politicized journalism, and public oratory as entertainment. Holzer describes the enormous risk Lincoln took by appearing in New York and recounts a brilliant public-relations campaign in Lincoln’s quest for the presidency.