Hand-colored lithograph, 21 1/2 x 27 3/4 inches; No. 11, Plate LII, printed in 1844. Original hand-colored lithograph from the Imperial Folio edition of The Viviparous Quadrupeds of North America, First Edition, published in Philadelphia between 1839 and 1844. Originally issued and sold by subscription in 30 parts, 5 plates per part. This is a stone lithograph by the highly skilled printer James T. Bowen of Philadelphia, who produced the set for Audubon in collaboration with his two sons. Audubon’s extensive travel and study of birds fueled his aspiration to produce a similarly monumental record of the quadrupeds native to North America. He believed that this study would serve as an appropriate culmination of his life’s work to create a complete scientific record of the animals of this continent.