Rocks dropped from loaded barges, Duluth ship canal

Rocks dropped from loaded barges, Duluth ship canal

Rocks dropped from loaded barges into the water, Duluth ship canal c.1900.

Color image of a rocky hillside and Lake Vermilion. Photograph by Minnesota Department of Natural Resources Staff, May 22, 2014.

Rocky hillside and Lake Vermilion

Rocky hillside and Lake Vermilion. Photograph by Minnesota Department of Natural Resources Staff, May 22, 2014.

An illustration of an adult female locust placing her eggs in soil, 1877.

Rocky Mountain Locust oviposition (egg-laying process)

An illustration of an adult female locust placing her eggs in soil, 1877.

Rocky outcrop inside Franz Jevne State Park

Rocky outcrop inside Franz Jevne State Park

A rocky outcrop in Franz Jevne State Park. Photograph by Marjorie Savage, 2021. Used with the permission of Marjorie Savage.

Color image of a rocky outlook at Interstate State Park, 2014. Photograph by Minnesota Department of Natural Resources Staff.

Rocky outlook at Interstate State Park

Rocky outlook at Interstate State Park, 2014. Photograph by Minnesota Department of Natural Resources Staff.

Color image of Rocky Ridge farm in Mansfield, Missouri, 2011.

Rocky Ridge Farm

Rocky Ridge Farm in Mansfield, Missouri. Photographed on June 24, 2011 by Wikimedia Commons user TimothyMN.

Color image of the rocky shoreline in Lake Vermilion–Soudan Underground Mine State Park. Photograph by Minnesota Department of Natural Resources Staff.

Rocky shoreline in Lake Vermilion–Soudan Underground Mine State Park

Rocky shoreline in Lake Vermilion–Soudan Underground Mine State Park. Photograph by Minnesota Department of Natural Resources staff.

Roland and Beth Dille

Roland and Beth Dille

Dr. Roland Dille with his wife, Beth Dille, in 1993. Presidents’ papers, 1888–present, Photograph Collection. Minnesota State University Moorhead Archives. Used with the permission of Minnesota State University Moorhead.

Roland Dille

Roland Dille

Dr. Roland Dille in the 1960s. From "Presidents’ papers, 1888–present," Photograph Collection, Minnesota State University Moorhead University Archives, Moorhead. Used with the permission of Minnesota State University Moorhead.

Roland Dille and students at Weld Hall

Dr. Roland Dille sits with students on the stairs of Weld Hall at Minnesota State University Moorhead in the 1970s. Presidents’ papers, 1888–present, Photograph Collection. Minnesota State University Moorhead Archives, Moorhead. Used with the permission of Minnesota State University Moorhead.

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