© Robert Fonesdisplay cases: 112.4 x 163.9 x 69.7 cm each; butter models: 6.4 x 6.4 x 12.1 cm each; chart A: 49.4 x 110.6 cm framed; chart B: 49.3 x 110.9 cm framed; map: 107 x 136.9 cm framedglass, plywood, arborite, aluminum, painted wood, printed papers, ink, paperPurchased 1992National Gallery of Canada (no. 36803)