It appears that I'm looking for Emil Karlsson/Carlson who emigrated in 1890 and lived in Chicago while working on the RailRoad.
Furthermore, I'm looking for siblings: August David Karlsson/Carlson, emigrated in abt. 1908; Gustav David Carlson/Karlsson, emigrated in abt. 1905; and Tida Eugenia Karlsson/Carlson who emigrated in abt. 1905.