Birds.- Audubon (John James) Common Gallinule (Plate CCXLIV), First edition, Common Moorhen, from "The Birds of America", etching and aquatint with hand-colouring, on Whatman wove paper with watermark dated '1835', platemark 310 x 495 mm (12 1/4 x 19 1/2 in), sheet 640 x 960 mm (25 1/4 x 37 3/4 in), full margins, minor nicks and small losses to extremities, some spotting, browning, and minor surface dirt, unframed, Robert Havell, [circa 1827-1838]; together with Audubon's Vireo Solitarus, Solitary Flycatcher (Plate 28), etching and aquatint with hand-colouring, on Whatman wove paper with watermark '1827', platemark 495 x 310 mm (19 1/2 x 12 1/4 in), sheet 970 x 640 mm (38 1/4 x 25 1/4 in), spotting and browning, stitch marks and toning visible to upper margin, minor nicks and tears to extremities, unframed, Robert Havell, [circa 1827-1838] (2)