Philosophy Hall National Historic Landmark Designation

National History Landmark plaque

Location: Philosophy Hall Entry Lobby, 3rd Floor, South Wall.

Philosophy Hall

has been designated a

National Historic Landmark

This building possesses national significance

in commemorating the history of the

United States of America

Edwin H. Armstrong developed a series of advances

in wireless communications technology in his second

floor laboratory between 1913 and 1954. These

contributions, which included FM radio, had an

important impact on the history of communications.


National Park Service

United States Department of the Interior