Columbia subject headings:
Palmer, William Jackson, 1836-1909--Correspondence.
United States--History--1865-1898--Sources.
United States--History--Civil War, 1861-1865--Sources.
Harvard subject headings:
Palmer, William Jackson, 1836-1909--Correspondence.
United States--History--1865-1898--Sources.
United States--History--Civil War, 1861-1865--Sources.
Princeton subject headings:
Palmer, William Jackson, 1836-1909.