J.G.A.M.Vugt, Cilinder, ets, 70 cm x 100 cm (05293)

J.G.A.M.Vugt, Monument 1/10, ets, 70 cm x 90 cm (06649)

J.G.A.M.Vugt, Table 1/10, ets, 70 cm x 90 cm (06648)

J.G.A.M.Vugt, Straight thinking, ets, 80 cm x 115 cm (06704)