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American Radio and Technological Transformation from Invention to Broadcasting, 1900–1945  

Michael A. Krysko

Radio debuted as a wireless alternative to telegraphy in the late 19th century. At its inception, wireless technology could only transmit signals and was incapable of broadcasting actual ... More

Infrastructure: Mass Transit in 19th- and 20th-Century Urban America  

Jay Young

Mass transit has been part of the urban scene in the United States since the early 19th century. Regular steam ferry service began in New York City in the early 1810s and horse-drawn ... More

Social Science and Foreign Affairs  

Joy Rohde

Since the social sciences began to emerge as scholarly disciplines in the last quarter of the 19th century, they have frequently offered authoritative intellectual frameworks that have ... More

US Policy on Chemical and Biological Weapons  

Thomas I. Faith

Chemical and biological weapons represent two distinct types of munitions that share some common policy implications. While chemical weapons and biological weapons are different in terms of ... More

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