President Lincoln worked hard for the 13th amendment. He was a life long opponent of slavery. And he ultimately supported equal rights for black Americans.
Walt
According to the New York Tribune he sure did!
"Mr. Corwin's amendment to the Constitution prohibiting Congress from interfering with Slavery in the States finally prevailed by the bare Constitutional majority. It is known that Mr. Lincoln favored its passage" - New York Tribune, March 5, 1861
"Mr. Lincoln has advised that the Republicans of his State should support Mr. Corwin's constitutional amendment...prohibiting Congress from interfering with the domestic institutions of the South." - New York Tribune, March 2, 1861