You are indeed correct in thinking that the MD # 4 Chest fits inside the Chest, Field, Plain, Empty. As for converting a footlocker, I'm not sure how it could be done. Many of the footlockers that I have seen are lower than the Chest, Field, Plain and so converting one into a Med Chest could prove difficult.
I think that perhaps docdean is your best source for an answer on this, as he really does seem to know his stuff about the chests.
Hope that helps somewhat Nicholas, and do keep us posted on how the project materialises.
Ben MajorMRC Administratorben@med-dept.com
1943 Harley-Davidson WLA
1943 Douglas C-47
1944 Cushman 53 Airborne Motor Scooter