"90-Day" Gunboats under construction at New York City, 1861
Photo #: NH 59368 90-Day Gunboats under construction at New York City, 1861 Engraving published in Harper's Weekly, July-December 1861 volume. It depicts USS Unadilla on the stocks at the John Englis shipyard (top left), USS Winona at the C. & R. Poillon shipyard (top right), and USS Ottawa at the Jacob A. Westervelt shipyard (bottom). These ships were launched (respectively) on 17 August, 14 September and 22 August 1861. U.S. Naval History and Heritage Command Photograph.