Lockwood, James Booth, 1852–84, American arctic explorer, b. Annapolis, Md. In 1873 he was commissioned second lieutenant in the U.S. army. In 1881, Lockwood joined the arctic expedition of Adolphus W. Greely, in the course of which he performed two noteworthy feats—he led a sledging party to Mary Murray Island, off N Greenland, thus achieving a record for the northernmost point reached up to that time (lat. 83°24−N, according to his calculations), and later (1883) he crossed Grant Land on Ellesmere Island to the west shore. He died at Cape Sabine, as did other members of the ill-fated Greely expedition.
The Columbia Electronic Encyclopedia, 6th ed. Copyright © 2012, Columbia University Press. All rights reserved.