Digital BW, The Print

Ken,

At least in later years,  Ansel signed the print on the front with his 
name and the date the image was made.  On the back of the print, he put 
his name, address, name of image, place taken, date image was made, and 
date print was made.

I think that's the proper was to do it. You are right about his 
printing some images over the years with different results.  Showing 
the date the print was made lets you see if it was a vintage print or a 
later version.

Ron