Case Details:Nancy Ann Sellers (née Tremaine), 25, of Green River, Wyoming, was last seen in her hometown on or about May 20, 1981. No specific time of day or precise location within Green River for her disappearance has been publicly documented, and no clothing description or personal effects have been released. Sellers had relocated to Sweetwater County with her family from Reynolds County, Missouri in the late 1970s. At the time she went missing she was married to her second husband, Clayton Sellers, of Green River. She was previously married to Gary Michel Asberry. She was described at the time of her disappearance as a white female, 5 feet 1 inch tall, weighing approximately 110 pounds, with brown hair and brown eyes, and no distinguishing marks or scars were reported.

Sellers was reported missing by her husband, Clayton Sellers. The case has been investigated since 1981 by the Sweetwater County Sheriff's Office under agency case number 81-1803, and is listed with NamUs as MP21772 and with the Doe Network as case 3430DFWY. Family members have said it was discussed with Sellers' mother that possible remains had been found in an area near the Wyoming–Utah border. A secondhand account citing Wyoming's Division of Criminal Investigation cold case database further states that a leg and foot recovered years earlier were matched to Sellers through DNA testing completed in 2013; this claim comes from a single unverified secondary source and has not been confirmed against a primary agency record, so the case is entered here as Missing pending analyst verification of current status. DNA is listed as available for comparison. Anyone with information is asked to contact the Sweetwater County Sheriff's Office at (307) 922-5300, referencing case number 81-1803 or NamUs #MP21772.