This engraved printing plate was prepared to print an image of "Lagenorhynehus lateralis, Delphinus borealis" (now Stenella coeruleoalba - striped dophin and lissodelphis - northern right whale) for the publication "United States Exploring Expedition, During the Years 1838, 1839, 1840, 1841, 1842," Volume 8, Mammalogy and Ornithology, Atlas, Plate 7, in the edition Philadelphia : J. B. Lippincott & Co., 1858. The engraving was produced by W. H. Dougal after T. R. Peale.
