ethically sourced https://mortenhannemose.github.io/lena/
I 100% respect Lenna's wishes to stop using the image. I have a small tinge of regret based on some of the comments in the subthread, but it is for the better.
I even own a copy of the Playboy this was taken from, but funny thing is, I have never opened it. It is on my shelf next to the Utah Teapot. I guess in a way, I could justify it as one less use of the images.
Stable image reconstruction using total variation minimization
https://www.semanticscholar.org/paper/Stable-Image-Reconstru...
Oh man, if only this were true.