The Walter Giles Correspondence to Ruth Giles While Serving on the U.S. Antarctic Service Expedition contains two letters sent by Giles from Antarctica to his sister, Ruth Giles, dated 1939 and 1940. Giles writes about missing his hometown in Georgia, the weather, activities on base, and plans to visit Georgia once he returns to the United States. One of the envelopes sent to Ruth Giles has a Pitcairn Island cover, cancelled at Pitcairn Island 14 December 1939.