Delema Sits Poor was 12 when she vanished from the Pine Ridge Reservation on February 4, 1974. An Oglala/Mniconju Lakota girl known as Babe, she left the Seventh Day Adventist School with a friend and walked along a backroad toward Manderson in a severe snowstorm. The friend turned back after developing frostbite and sought shelter; Delema continued alone and was never seen again.

She was last seen wearing a white, down-filled jacket with two brown stripes on each sleeve, brown bell-bottom pants, and sneakers. Her family reported her missing the next day, the National Guard assisted searches were conducted in the Calico community area, and searches lasted about a week before being called off. Authorities believe she is deceased, but her remains have not been found and the circumstances remain unclear.

Her case is listed with the National Center for Missing & Exploited Children as 2015999. The Oglala Sioux Tribe Department of Public Safety and the Bureau of Indian Affairs Missing and Murdered Unit are seeking information. If anyone knew Delema, her movements that day, or has information about the Calico area in February 1974, please come forward.