Record Data Place Unit Type City or Town Containing Unit Mercer County, PA Events Date Type 01/11/1866 Harriet Lane, former President Buchanan's "First Lady," marries Baltimore banker Henry Elliot Johnson Personal 06/01/1868 James Buchanan dies in Lancaster, Pennsylvania Personal People Documents Date Title 03/11/1861 James Buchanan to James Gordon Bennett, March 11, 1861 05/01/1865 James Buchanan to Horatio King, May 1, 1865 Images Bibliography Wheatland’s Landscape: 1848-1868 The Story of Wheatland James Buchanan: Fifteenth President of the United States Wheatland, 1848-1868: The Home of James Buchanan Wheatland: A Presidential Retreat in Lancaster County