• Mammillary topography

    Hotchkiss, W.O

    Photograph showing "mammillary" topography near the edge of the Wisconsin terminal, about 3 miles north of New Richmond.

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  • Trenton hills

    Thwaites, F.T

    Panoramic set of two photographs showing a view southeast from the Frank Fuller family farm toward hills of Trenton limestone.

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  • Till and terrace sand in old valley

    Photograph showing till overlying terrace sand in an old valley of the St. Croix River.

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  • View from St. Lawrence hill

    Thwaites, F.T

    Panoramic set of two photographs showing a view from a hill of St. Lawrence limestone five miles north of Wheeler, Wisconsin.

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