Sesame Street has undergone significant changes in its history. According to writer Michael Davis, by the mid-1970s the show had become "an American institution". The cast and crew expanded during this time, including the hiring of women in the crew and additional minorities in the cast. The show's success continued into the 1980s. In 1981, the federal government withdrew its funding, so CTW turned to other sources, including its magazine division, book royalties

Royalties

Royalties are usage-based payments made by one party to another for the right to ongoing use of an asset, sometimes an intellectual property...

, product licensing, and foreign income.