Antarctica: Operation Highjump 1946-47: 1947 (Jan. 1) cover endorsed “Free” with USS “Pine Island” duplex and Operation cachet in purple, endorsed sent by Capt. H.H. Caldwell. Also cover sent from “Pine Island” crew member on Jan. 10 during search period with ship’s straight line and Operation cachet. Ex Harry Evans. Henry Howard Caldwell (1905-1985), Captain of the “Pine Island” was officially missing on this date after flying boat (in which he was an observer) crashed on the Thurston peninsula. Three of the crew were killed and Caldwell, with other survivors, was marooned for thirteen days before rescue. Photo. (Image1)