Columbia subject headings:
Soldiers--Spain--Correspondence.
Spain--History--Civil War, 1936-1939--Personal narratives, American.
Spain. Ejército Popular de la República. Brigada Internacional, XV.
Harvard subject headings:
Americans--Spain--Correspondence.
Soldiers--Spain--Correspondence.
Spain--History--Civil War, 1936-1939--Participation, American.
Spain--History--Civil War, 1936-1939--Personal narratives, American.
Spain. Ejército Popular de la República. Abraham Lincoln Battalion--Biography.
Princeton subject headings:
Soldiers--Spain--Correspondence.
Spain--History--Civil War, 1936-1939--Personal narratives, American.
Spain. Ejército Popular de la República. Brigada Internacional, XV