“whose mother posed nude for the pornographer” ............... ???? Really??? Where are the photos of her? Don’t post them, just where are they? Where is the source? If we are talking about some look alike photo taken in the 40’s around Christmas time, it isn’t her, she wasn’t in her 20’s.
Here ya go.
http://www.bitrebels.com/technology/3d-ultrasound-image-color-process/
Taken by her lover, Frank Marshall Davis.