Hughes Flying Boat HK1 Hercules Spruce Goose Wooden Model Airplane by Dumas This is the Dumas HK-1 Hughes Spruce Goose. Features:constructed of hand selected balsa partsPrecision laser cut partsColor peel and stick decal setVacuum molded plastic partsFull size plans with step by step instructionsLightweight colored tissue (grey in color)Includes:All the wood to build the airplane and floatsEight wood construction, 4-bladed propsOne plastic cowlingOne peel and stick decal sheetTwo 20" x 30" p