Oak Lawn Plantation in Louisiana, January, 1864, artist's impression, zoomable image
Oak Lawn Plantation in Louisiana, January, 1864, artist's impression, zoomable image
Oakes Ames, circa 1864
Oakes Ames, circa 1864
Oakes Ames, circa 1864, detail
Oakes Ames, circa 1864, detail
Oakland County, Michigan, 1857
Oakland County, Michigan, 1857
Obed Hussey, detail
Obed Hussey, detail
Oberlin Underground Railroad monument, 1977
Oberlin UGRR installation
Obion County, Tennessee, 1857
Obion County, Tennessee, 1857
Ocean County, New Jersey, 1857
Ocean County, New Jersey, 1857
Ocean Yacht Race, off Long Island, September 11, 1865, artist's impression
Ocean Yacht Race, off Long Island, September 11, 1865, artist's impression
Oceana County, Michigan, 1857
Oceana County, Michigan, 1857
Oceania, 1857, zoomable map
Oceania, 1857, zoomable map
Oconto County, Wisconsin, 1857
Oconto County, Wisconsin, 1857
Octavius Valentine Catto
Octavius Valentine Catto
Octavius Valentine Catto, detail
Octavius Valentine Catto, detail
Officers and Ladies, Carlisle Barracks, Carlisle, Pennsylvania, circa 1867
Officers and Ladies, Carlisle Barracks, Carlisle, Pennsylvania, circa 1867
Officers and Ladies, Carlisle Barracks, Carlisle, Pennsylvania, circa April 1861
Officers and Ladies, Carlisle Barracks, Carlisle, Pennsylvania, circa April 1861
Officers and Ladies, Carlisle Barracks, Carlisle, Pennsylvania, circa April 1861, detail
Officers and Ladies, Carlisle Barracks, Carlisle, Pennsylvania, circa April 1861, detail
Officers Quarters, Carlisle Barracks, Carlisle, Pennsylvania, circa April 1861
Officers Quarters, Carlisle Barracks, Carlisle, Pennsylvania, circa April 1861
Offices of the "Knoxville Whig," Knoxville, Tennessee, March 1864
Offices of the "Knoxville Whig," Knoxville, Tennessee, March 1864
Ogemaw County, Michigan, 1857
Ogemaw County, Michigan, 1857
Oglala Lakota Sioux war leader Pawnee Killer, Kansas, June 1867, artist's impression.
HD_PwnKllr67_08HW022.jpg
Ogle County, Illinois, 1857
Ogle County, Illinois, 1857
Oglethorpe County, Georgia, 1857
Oglethorpe County, Georgia, 1857
Ohio County, Indiana, 1857
Ohio County, Indiana, 1857
Ohio County, Kentucky, 1857
Ohio County, Kentucky, 1857
Ohio Republican Committee Announces publication of the Lincoln-Douglas Debates, March 1860
Ohio Republican Committee Announces publication of the Lincoln-Douglas Debates, March 1860
Ohio, 1853
Ohio, 1853
Ohio, 1857, zoomable map
Ohio, 1857, zoomable map
Oil barges at mouth of Oil Creek, Crawford County, Pennsylvania, December 1864, artist's impression, detail
Oil barges at mouth of Oil Creek, Crawford County, Pennsylvania, December 1864, artist's impression, detail
Oil barges at mouth of Oil Creek, Crawford County, Pennsylvania, December 1864, artist's impression, zoomable image
Oil barges at mouth of Oil Creek, Crawford County, Pennsylvania, December 1864, artist's impression, zoomable image