Conversely, where is the actual Lena reference image? 8-bit pixel depth, 512x512, uncompressed tiff format preferably. Is there a canonical persistent URI someplace?
At this point archive services are the best bet for this kind of image.
A permanent link to the TIFF image itself is: http://www.lenna.org/lena_std.tif
Intrigue. Looks like it was removed from the SIPI db?
https://sipi.usc.edu/database/database.php?volume=misc
World needs a new 600 DPI reference scan. To the Playboy Archives!