I was actually planning on making these floor lamps before the Pendant Lamps Project. These both derive from the same general design pattern Frank Lloyd Wright used in many of his house designs and it is even used in his personal residences. He called these things "glass-less light" or "light boxes", since they were made entirely out of wood. They are a neat design and provide a really pleasing lighting. Like the Pendant Lamps, there are places you can actually buy these from, though they are not cheap.
I've created a rough 3D computer model based on the photographs I have found, and have some relatively detailed plans with dimensions. When I get around to making them, I will likely make 2 or 3 of them.