Search Results       Your search for [subject]Mass media -- Technological innovations -- United States -- History -- 20th century returned 1 record.           Electric sounds: technological change and the rise of corporate mass media. by Wurtzler, Steve J.; New York: Columbia University Press, 2007. Subject: Mass media -- Technological innovations -- United States -- History -- 20th century; Mass media -- Ownership -- United States -- History -- 20th century; Sound -- Recording and reproducing -- United States -- History -- 20th century; Electronic books.          Add to Book Cart Relevance: 43.40%