A study of Villas on the Hudson: A Collection of Photo-Lithographs of Thirty-One Country Residences (D. Appleton & Co., 1860) depicts floor plans and views of stately homes of 19th century country gentlemen that were located in today's upper Manhattan, the Bronx, Westchester County, Dutchess County, and even Hoboken, NJ. When published, architecture was in its infancy as a profession and we see representative works of A.J. Davis, J.C Wells, T.R. Jackson and D. Lienau, and others. The accomplishments and interests of the villa’s owners are discussed; and the current status and use of the surviving eleven villas are reviewed.