Coursed Limestone
Unlike the Fachwerk houses, the German stone (or “rock”) houses are easily identifiable. These houses may be of several plan types: single-room, back-to-back, central hall), but all are built of coursed rubble limestone: irregularly-sized stone blocks laid in lines or courses. German stone masons were very adept at using the quantities of limestone available at St. Louis quarries. Often the stone was not of the first quality, yet care was taken to dress, shape and lay it in even courses. These houses are found east of Jefferson Avenue; the largest remaining concentration is in the Carondelet neighborhood. (St. Louis, 1995)