The barn in Belgrade, Maine that the Foster brothers, F. C. and E. L. Foster, built on their farm around the turn of the twentieth century exhibits a transition from a traditional, timber-framed, mixed-use barn to a more modern building focused on dairy farming. The transition is seen in the spatial plan of the barn, the equipment utilized in the building, and in the materials used in constructing and framing the structure. Each of these features reflects the family?s increased focus on dairy farming. The Foster Barn at Winterberry Farm was listed in the National Register of Historic Places under Criterion C for its architectural significance as an example of a type agricultural building that was evolving in the early twentieth century.