https://moon.nasa.gov/resources/26/first-photo-of-the-lunar-farside/
NASA
A comparison of the Luna 3 image with a composite images created by Lunar Reconnaissance Orbiter. NASA.
A comparison of the Luna 3 image with a composite images created by Lunar Reconnaissance Orbiter. NASA.
https://moon.nasa.gov/resources/26/first-photo-of-the-lunar-farside/