Sesame Street was conceived in 1966 during discussions between television producer Joan Ganz Cooney and Carnegie Foundation vice president Lloyd Morrisett. Their goal was to create a children's television show that would "master the addictive qualities of television and do something good with them", such as helping young children prepare for school. After two years of research, the newly formed Children's Television Workshop (CTW) received a combined grant of US$8 million ($55 million in 2018 dollars) from the Carnegie Foundation, the Ford Foundation, the Corporation for Public Broadcasting and the U. S. Federal Government to create and produce a new children's television show. The program premiered on public television stations on November 10, 1969. It was the first preschool educational television program to base its contents and production values on laboratory and formative research. Initial responses to the show included adulatory reviews, some controversy, and high ratings. By its 50th anniversary in 2019, there were over 150 versions of Sesame Street, produced in 70 languages. As of 2006, 20 international versions had been produced.