I believe 4CJ has posted some stuff on Lincoln wanting to send the freed slaves back to Africa when he was posting on here.
Thanks for the reminder about 4CJ. Here was one of his posts containing prewar quotes from Lincoln that illustrate his [Lincoln's] thoughts about the blacks. Link to 4CJ post 122.
Then there is the 1864-65 trip of General Dan Sickles to Colombia to discuss colonization there at the behest of Lincoln. Here, from the Dayton Daily Empire Newspaper of June 2, 1865 is the following mention of Sickles, Lincoln and the mission to Colombia [Source].
The Negroes of the U.S. To Be Sent To Bogota
It is understood that the mission of General Sickles to was for the purpose of obtaining grants of lands for the purpose of settling them with blacks from the United States, and that the late President who authorized the mission, was willing to give fifteen millions of dollars for adequate territory.