John Newcomb and the Viking Project - 2014 NASA Langley

[Winston]

Viking Mars Lander: "John Newcomb and the Viking Project" - 2014 NASA Langley

 

[Winston]

Viking Lander Labeled Release Life Detection Experiment
Why We May Have Already Found Life On Mars with Dr. Patricia Ann Straat

Because of the very limited resolution of the Viking Orbiters' cameras (37.5 m (124 ft.) per pixel) compared to modern orbiters, the chosen "smooth" landing sites weren't so smooth:

CO2 frost:

Carl Sagan to scale:

 

[Winston]

Viking Orbiters/Landers Press Kit

https://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19760018033.pdf