Original ~1959 copy. This survey dominated astronomy for decades. These are 14-inch-square photographic negative prints (stars look like black dots). Each of the 879 fields of the sky, from the North Celestial Pole to –30° declination, has a photo in blue light, a photo in red light, and a transparent overlay from Dixon & Sonneborn’s A Master List of Nonstellar Optical Astronomical Objects, 1981. Probably weighs about 150 pounds. Presently in 3 cartons in the central USA. People or organizations wanting to acquire it should contact email@example.com.