 140px|<center>Richard E. Byrd, Antarctica1933 issue Late American explorers included Richard Byrd. The United States maintains research facilities in Antarctica without making territorial claims there, along with other international bases there.
<coherence>  140px|<center>Richard E. Byrd, Antarctica1933 issue Late American explorers included Richard Byrd. The United States maintains research facilities in Antarctica without making territorial claims there, along with other international bases there.