http://unidentified.wikia.com/wiki/Princess_BluePrincess Blue was a teenage girl whose skeleton was found at the side of a road in Texas. She is known by her nickname due to a blue 1975 class ring that she wore.
Case:
Princess Blue's body was found under a pile of brush and a tire by a man who stopped to relieve himself. She wore several rings, including the class ring that was found. She was likely deceased for around a year, which indicated that the ring did not belong to her originally.
She was thought to be Hispanic, but was later found to be White with African-American heritage, most likely having at least one Black grandparent. Because of this, the sketches may not be accurate.