A copy of the Emancipation Proclamation signed by Lincoln -- the highlight of a fascinating catalog -- sold at a Sotheby’s auction for $12 million.

Among the Lincoln Brigade members were 90 Black soldiers. Back home they’d faced a revitalized Ku Klux Klan, dehumanizing Jim Crow laws, and the harshest impact of the Great Depression.

President Abraham Lincoln, with young son Tad and Senator Charles Sumner, salutes a detachment of African-American Union troops in Richmond, Virginia at the end of the American Civil War. Published in ...