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August 13, 2025 – The Dakota Badlands played an important role in Theodore Roosevelt's life. He often said he never would have been President had it not been for his experiences in Dakota Territory. But what may be surprising is the immense role the Dakota Badlands also played in the lives of Roosevelt's children. None of Roosevelt's six children ever lived in Dakota, but their father's stories were enough to intrigue even the youngest mind. Ethel Roosevelt Derby, Theodore's fourth child and youngest daughter, was born on this date in 1891; several years after her father had given up active ranching in the Badlands. Growing up in Oyster Bay, New York, she and her siblings were often entertained with stories of Chimney Butte and the Elkhorn Ranch. In penning the foreword to a book on her father's work as a naturalist, Ethel wrote, 'We used to hear of the strange wild beauty of that country and of the pioneer virtues of the people who lived there. Men, women and children who were hardy, brave and self-reliant, who faced adventure and dangers of which we knew nothing.' They heard about the scarcity of wood, the long days and nights of the roundups, their father's favorite horse and the pleasure he found in a simple rocking chair in the cool of a summer evening. His stories inspired several exciting camping trips at Oyster Bay in an effort to recreate the Badlands experiences.