Another similar continuous string course is above the third floor. The fourth floor consists of a series of four round-headed brick and stone dormers. The western bay is treated as a slightly projecting pavilion terminating in a gable with a flat-headed window in the center. The Franklin Street facade of the western wing is nine bays wide and four stories high. It rests on a high granite basement.
String courses are above the first and fourth levels, as on the main facade of the building.
The fourth bay from the south end is defined by stone quoins and is slightly sunken from the plane of the facade. At the base is a small doorway. The roof line consists of a steep sloping slate roof with four asymmetrically grouped dormers in the north portion and two brick gables with windows and a window between the gables on the south end. The north face of the main body of the building is without architectural character, for it was not envisioned by the architects to be visible once adjacent buildings were constructed. The north elevation of the tower, however, was given an architectural treatment.