Oversize wood parade masks from Nebraska

These masks are from a Nebraska carnival that closed in the 1950s. A collector in Lincoln, Neb., bought them at auction in the 1970s and kept them until recently. Each face is made of early plywood and about 2 feet high and 16 inches wide, so much bigger than a real face. Including the stakes, they're roughly 4 feet tall. I would guess the age to be 1920s. I like the primitive, outsider look. Kids must have been frightened.