Many of the vernacular Gothic Revival and I-House dwellings, which line Locust Street in the Hogback neighborhood south of the mill, date from the late 1860s to 1870s. Farther away from the mill, on a hillside at the east end of the district, stand dozens of Four-Squares, Gable Fronts, and late Gothic Revival types built after the mill expansions of 1898 and 1912. These examples are found along New, Poplar, Walnut and Cherry Streets. Bungalow types from the 1920 to 1930s are scattered throughout the district in wood or brick.