FREE MOVIE · LIBRARY OF CONGRESS

The development of communication

Shows the inventions which made possible telegraph, telephone, and radio communications and the social, cultural, and economic effects upon humans living of these forms of 'instantaneous' communications.

Public domain — the Library of Congress knows of no copyright restrictions for this film. Source: Library of Congress, National Screening Room · archive record. Video streams straight from the archive; PatchTV does not host or relay it.