• Middleton quarry with Thwaites

    Photograph taken at the Middleton quarry, Thwaites is holding is hammer on contact between Oneota limestone and Madison sandstone. The section shows more clean sand at top of Madison sandstone with ba…

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  • Stone leveling on Powers Bluff

    Photograph showing geologist Stone taking level sight along the crest of Powers Bluff.

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  • Mississippi bluffs

    Photograph showing high bluffs on the east side of the Mississippi River 1 mile north of Alma, Wisconsin. A road and an automobile, with and unidentified man inside, are visible in the foreground.

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  • Quartzite in Devil's Lake south bluff

    Photograph showing quartzite ledges on the south bluff at Devil's Lake. An unidentified geologist is seen standing at left for scale. This area is now part of Devil's Lake State Park.

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  • Farwells Point, Lake Mendota

    Photograph taken at Farwells Point on Lake Mendota showing irregular contact of Mendota and sandy dolomite which Ulruch believes corresponds to dolomite in the Pheasant Branch section.

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  • Windrow Bluff

    Photograph showing geologist W.H. Schoewe at an outcrop of "Seneca" gravel at Windrow Bluff, near Tomah, Wisconsin.

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  • Geologists resting on bluff

    Photograph showing a group of geologists resting atop a bluff. Shown are (left to right): Martin, Ulrich, Hotchkiss and Mesler.

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  • Anderson atop bluff

    Photograph showing geologist Anderson standing atop a bluff, looking west over several valleys.

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  • Geologists on Bean Bluff

    Photograph showing geologists (left to right) Hotchkiss, Ulrich, Bean, Huntley and Martin relaxing on Bean Bluff, near Tunnel City, Wisconsin.

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  • Geologists on Powers Bluff

    Photograph showing a group of geologists gathered at the crest of Powers Bluff. Shown are (left to right): Quinn, Miller, Franklin and Carlson.

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  • Driving along Devil's Lake

    Photograph showing geologist E.F. Bean driving a mesh-sided truck known as "the cage" along the edge of Devil's Lake, near Baraboo, Wisconsin. Two female passengers, likely geologists' wives, accompan…

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  • Powers Bluff crest

    Photograph showing an eastern view along the crest of Powers Bluff. Geologists Quinn and Carlson are seen perched atop the crest.

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  • Mississippi River

    Photograph showing a view of the Mississippi River between Alma, Wisconsin and Waubasha, Minnesota. An unidentified man is visible in the foreground.

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  • Mile Bluff

    Photograph showing hard Dresbach sandstone at the south end of Mile Bluff. Three geologists are shown working in the foreground.

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  • Quartzite in Devil's Lake south bluff

    Photograph showing quartzite in the south bluff at Devil's Lake. An unidentified geologist is seen standing at center for scale. This area is now part of Devil's Lake State Park.

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  • Eidemiller atop hackly quartzite

    Photograph showing geologist H.N. Eidemiller writing notes while perched atop a hackly quartzite outcrop at the crest of Powers Bluff.

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  • Ulrich and Hotchkiss at Rattlesnake Bluff

    Photograph showing geologists (left to right) E.O. Ulrich and W.O. Hotchkiss standing atop Rattlesnake Bluff.

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  • 1918 Training camp - Humbird Bluff

    Photograph showing geologist Eidemiller (at left) and geologists-in-training (next to Eiedemiller, left to right) Marshall, Williams and Franklin standing on the crest of Humbird Bluff. Taken during a…

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  • Outcrop of sandstone on Bear Bluff

    A group of geologists sit on a sandstone outcrop on the west end of Bear Bluff.

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