Object/Material Note:
Drawing 1 published in Drawing upon nature : studies for the Blaschkas glass models, by Susan M. Rossi-Wilcox and David Whitehouse: 98376, p. 25, 142 QH324.8 .R83.
Drawing 2 published in Drawing upon nature : studies for the Blaschkas glass models, by Susan M. Rossi-Wilcox and David Whitehouse: 98376, p. 143 QH324.8 .R83.