This is the Dumas HK-1 Hughes Spruce Goose.
All the wood to build the airplane and floats
Eight wood construction, 4-bladed props
One plastic cowling
One peel and stick decal sheet
Two 20 x 30 pieces of grey tissue paper
Full size plan sheet with instructions
One vacuum formed canopy
Vacuum formed floats.
Paint for cowling
White glue to attach covering
Dope for shrinking the tissue
Wing span: 30" (762mm)
Airfoil: flat bottom (high wing placement)
Length: 21" (533mm)