1. 356. Sue M. Monroe to Mattie Hayne Heyward -- May 26, 1899 Date: 1899-05-26 Description: Letter from Sue M. Monroe to Mattie Hayne Heyward detailing how she cared for the graves of the soldiers in the days and years after the Second Battle of Bull Run and that the exact location of her uncle's remains are not known. 7p.