Neolithic tool from Niger (~6,000 years old), copper, oxidized copper, marcasite, beech wood
51 x 18 in (129.54 x 45.72 cm)

Beech, oak, pine wood, plumb, black iron, metal
36 x 20 in (91.44 x 50.80 cm)

Oak, red pine, mahogany wood
36 x 12 in (91.44 x 30.48 cm)

Rock, wood, iron, copper
12.50 x 12.50 in (31.75 x 31.75 cm)