Lofgren Peninsula is an ice-covered peninsula

Peninsula

A peninsula is a piece of land that is bordered by water on three sides but connected to mainland. In many Germanic and Celtic languages and also in Baltic, Slavic and Hungarian, peninsulas are called "half-islands"....

 about 22 nautical miles (41 km) long, projecting between Cadwalader and Morgan Inlets on the northeast side of Thurston Island

Thurston Island

Thurston Island is an ice-covered, glacially dissected island, long, wide and in area, lying a short way off the NW end of Ellsworth Land, Antarctica. It is the third largest island of Antarctica, after Alexander Island and Berkner Island...

. Discovered in helicopter flights from the USS Bellingshausen Sea Expedition in February 1960. Named by Advisory Committee on Antarctic Names

Advisory Committee on Antarctic Names

The Advisory Committee on Antarctic Names is an advisory committee of the United States Board on Geographic Names responsible for recommending names for features in Antarctica...

 (US-ACAN) for Charles E. Lofgren, personnel officer with the Byrd Antarctic Expedition, 1928-30.