Columbia Broadcasting System, Inc. (Corporate Name)

Vertical study of radio ownership ... c1933.

Moody's ind. man., 1979 (inc. 1/27/27 as United Independent Broadcasters, inc. [no pubs. in LC]; name subsequently changed to Columbia Broadcasting System, inc.; name changed 4/18/74 to CBS Inc.)

The Joint committee study of rural radio ownership and use in the United States, 1939: t.p. (Columbia Broadcasting System, Inc.)

Godfrey, D., ed. Historical dictionary of American radio, 1998: p. 83-84 (Columbia Broadcasting System came into being in the early days of radio broadcasting in the United States; in January, 1929, William S. Paley merged Columbia Phonograph Broadcasting [no pubs. in LC] with United Broadcasters [no pubs. in LC] to create the Columbia Broadcasting System; Paley encouraged quality radio shows, and set the standard for radio news reporting with Edward R. Murrow and his team covering World War II; Columbia began television programming in 1948) p. 66 (CBS News; a freestanding company formed by William S. Paley as part of the Columbia Broadcasting System)

Britannica Academic, accessed December 19, 2018 CBS Corporation (On January 18, 1929, the newly christened Columbia Broadcasting System signed on the air)

International television almanac, 1962: p. 647-648 (Columbia Broadcasting System, Inc. organization: CBS Television Network, CBS News, CBS Radio)

Wikipedia WWW site, viewed December 28, 2018 CBS Productions (production arm of the CBS Television Network, now a part of CBS Corporation (formerly the Columbia Broadcasting System, then CBS Inc.); formed in 1948 to produce shows in-house)

Mitchell, G. The tunnels, 2017.