At the The Holy Grail of E. L. Moore photos has a Goofy problem post, Paul mentioned in the comments section that his grail photo would be one of the scenicked front left corner of the Elizabeth Valley RR. This is the best photo of the layout's front lower left corner that I've come across. It's a section of this night photo.
The upper left corner is the location of the Branch Line Station and has been visible in a number of layout photos. The front lower left corner appears to be empty.