to manage offers to produce versions of Sesame Street in other countries. In response to Dann's appointment, television critic Marvin Kitman said, "After [Dann] sells [Sesame Street] in Russia and Czechoslovakia, he might try Mississippi, where it is considered too controversial for educational TV". This was a reference to the May 1970 decision by the state's PBS station to not air the series. By summer 1970, Dann had made the first international agreements for what the CTW came to term "co-productions". The earliest international versions were what CTW vice-president Charlotte Cole and her colleagues termed "fairly simple", consisting of dubbed versions of the series with local language voice-overs and instructional cutaways. Dubbed versions of the series continued to be produced if the country's needs and resources warranted it. Eventually, a variant of the CTW model was used to create and produce independently produced preschool television series in other countries. By 2006, there were twenty co-productions. In 2001, there were more than 120 million viewers of all international versions of Sesame Street, and by the show's 50th anniversary in 2019, 190 million children viewed over 160 versions of Sesame Street in 70 languages. In 2005, Doreen Carvajal of The New York Times reported that income from the co-productions and international licensing accounted for $96 million. As Cole and her colleagues reported in 2000, "Children's Television Workshop (CTW) can be regarded as the single largest informal educator of young children in the world". Interactive media Ten years after the premiere of Sesame Street, the CTW began experimenting with new technologies. In 1979, it began to plan the development of a theme park, Sesame Place, which opened in 1980 in Langhorne, Pennsylvania. Three international parks, Parque Plaza Sesamo in Monterrey, Mexico since 1995, Universal Studios Japan, and Vila Sesamo Kids' Land in Brazil were later built. One of the park's features was a computer gallery, which was developed by a small in-house team and included 55 computer programs. The team evolved into the Children's Computer Workshop (CCW) in 1982, which was disbanded and became the Interactive Technologies division of the CTW in the late 1980s. As Sesame Street researcher Shalom M. Fisch stated, no television series could be as interactive as computer games, even "participatory" shows like Blue's Clues or the Sesame Street segment "Elmo's World". The CTW has chosen to take advantage of the contingent feedback inherent in interactive computer games by