Future plans of the Lincoln Home National Historic Site (Springfield, Illinois) include the re-construction of a number of architecturally compatible structures (i.e. barns, sheds, privies) on various properties located within the site’s historic zone.  Such plans call for the construction of a carriage house and related landscape features on the rear lot of the Dean House, which is located across the street from the Lincoln Home.  Archaeological investigations, aided by limited archival resources, resulted in the documentation of two nineteenth century carriage barns and multiple privy pits along the rear property line of the property.  These investigations, which have documented the evolution of the Dean House rear yard during the nineteenth and early twentieth centuries, suggest that the original dwelling probably did not have a carriage house.  At an early date, a small frame carriage house (with associated privy) was constructed.  During the middle nineteenth century (circa 1870) this small structure was either replaced or enlarged to a much more substantial carriage barn.  At the same time, a new privy was constructed.  This middle-century carriage barn appears to have remained relatively intact through the middle twentieth century.  Besides documenting the evolution of the rear yard landscape at the Dean House, our investigations have also resulted in the collection of a wide range of artifacts from several well-dated contexts.  These artifacts document a rise in economic prosperity for the site occupants during the middle to late nineteenth century and a subsequent decline in prosperity during the late nineteenth through early twentieth centuries.  Additionally, these artifacts document a wide range of activities that occurred at the site through these years and offer insights into the changing character of the house, outbuildings and individuals that occupied this site.