The Federal Communications Commission (FCC), established in 1934, regulates interstate and international communications such as television, radio, cable, and telephones. Its functions were previously handled by the Department of Commerce and Labor.
The Federal Trade Commission (FTC) was established in 1914. It enforces laws relating to anti-competitiveness, unfair and deceptive trade practices, and other consumer protection laws.
Records of the FCC at NARA - Administrative history of FCC and list of FCC records held at the National Archives.