Historian St. George L. Sioussat served as vice-president of the American Philosophical Society, 1947-1948.
Ca.140 items.
Mrs. Sioussat, gift.
This collection contains typescript copies of letters relating to William Walker and the filibusters in Guatemala. The collection is based on the papers left by Major John P. Heiss. Heiss was "intimately associated" with Walker. The collection begins in the 1850s.