This file has been superseded by Mars Viking 11d128.png. It is recommended to use the other file. Please note that deleting superseded images requires consent.
Reason to use the other file: "Higher quality image"
The NASA website hosts a large number of images from the Soviet/Russian space agency, and other non-American space agencies. These are not necessarily in the public domain.
The SOHO (ESA & NASA) joint project implies that all materials created by its probe are copyrighted and require permission for commercial non-educational use. [2]