Orr, John William. Pictorial Guide to the Falls of Niagara: A Manual for Visiters, giving an Account of this Stupendous Natural Wonder; and all the Objects of Curiosity in Its Vicinity; with every Historical Incident of Interest. ... Illustrated by Numerous Maps, Charts, and Engravings, from Original Surveys and Designs. The Illustrations designed and engraved by J. W. Orr. Buffalo: Press of Salisbury and Clapp, 1842. 232 p.