Columbia subject headings:
Eisenhower, Dwight D. (Dwight David), 1890-1969.
Twain, Mark, 1835-1910--Influence.
Harvard subject headings:
Eisenhower, Dwight D. (Dwight David), 1890-1969
Twain, Mark, 1835-1910
Princeton subject headings:
Eisenhower, Dwight D. (Dwight David), 1890-1969.
Twain, Mark, 1835-1910.