Thanks for the nice comment on the pictures. I have to fiddle with every picture to make them look right, and after a few pics it's tough to tell if I'm over-doing it.
The whole great wall is well over 1000 miles and many parts are not open to the general public, so I doubt many (if any at all) people still living have ever walked the entire wall.
That said, I met an Israeli couple walking on this section and they had a little book with them that apparently detailed the ENTIRE wall mile by mile, complete with diagrams, photos, and little historical snippets. They climbed the section I was on and referenced their exact location in the book.