Marie Barton Greene worked with the Christian Commission and Sanitary Commission attending to wounded Civil War soldiers as they arrived in Washington, D.C. She sent two letters to a sister of Charles Adams (1845-1864), Mary Adams Wheelock, describing how she attended Adams during the last hours of his life on June 11, 1864. Adams had been been severely wounded in the Civil War Battle of Cold Harbor. John H. Hubbard and several others were present. One letter includes a poem she wrote "suggested by meeting and watching beside" Charles "in his last moments."