Paul;
I have been looking for knife box plans for a long time. I found rough pictures in Wallace NUtting's "Furniture Treasury" volume III, page 122. This is the only George III picture of this high order I have seen. I have years worth old "Antiques Magazine" but cannot find a index. I'm sure at some point the magazine must have done an article on them. I'll keep looking, if I find something I'll let you know.
JMA