GP15-1 115 (location unknown) on July 7, 1980 By Frisco.org | Published February 28, 2017 | Full size is 6448 × 4368 pixels GP15-1 115 (location unknown) on July 7, 1980 GP15-1 115 GP15-1 115 (location unknown) on July 7, 1980 Bookmark the permalink.