"Birds." . . "Morton Arboretum. Art Collection." . . . . . . . . . "Prints" . . . "Colymbus glacialis, L" . "Copperplate plate engraving and aquatint, printed in black and hand-colored. (Plate 306) Female bird in winter plumage in the water on the left and a male bird in breeding plumage in a grassy clump on the right, calling. Rock cliffs in the distance. Reeds and water plants in the foreground." . "Great northern diver or loon Colymbus glacialis, L" . . "Engravings" . . . .