Loretta Mae Long ( Moore; born October 4, 1938) is an American actress. She played the character of Susan Robinson on Sesame Street from 1969 to 2017. Long is also a consultant and public speaker on issues of multiculturalism and education. With the death of Bob McGrath in 2022, she became the show's last surviving original human main cast member. Career Long earned her Ph.D. in urban education in 1973 from the University of Massachusetts, Amherst while she was starring on Sesame Street. She has acted in musicals (such as Guys and Dolls) and appeared on the Flip Wilson Show with other Sesame Street cast members during its first season. In the early years, she voiced a few female Muppet voices, including Suzetta (Roosevelt Franklin's mother) and one of the Anything Muppet backup singers in "Mahna Mahna", as well as other Muppets where a female voice was needed. Long's character, Susan Robinson, and Bob (Bob McGrath) were the only two remaining non-puppeteer actors on Sesame Street from its first episode before they were phased out of the show in 2016; Will Lee (Mr. Hooper) died in 1982 and Matt Robinson (the original Gordon) left the show in 1972. Before Sesame Street, Long served as co-host of the WNET program Soul! a weekly music, cultural, social and artistic PBS program, from its premier broadcast on September 12, 1968 (when she co-hosted with Alvin Poussaint, the black Harvard psychologist) through December 5, 1968 (when she co-hosted with then-future Soul! sole co-host Ellis Haizlip). At the same time, Long also was a substitute teacher in New York City. She continued to substitute-teach during her early days working for Sesame Street, occasionally causing confusion for students who had watched her on Sesame Street before coming to school and then saw her in their classroom later that same morning. Education Long commuted to the University of Massachusetts on her days off from Sesame Street to complete a Ph.D., awarded in 1973. Her dissertation, "'Sesame Street': A Space Age Approach to Education for Space Age Kids", examined the educational model used on Sesame Street. Sesame Street Long's main role on Sesame Street, until the character was phased out in 2016, was Susan, wife of Gordon Robinson. At the beginning of the first season, her character was a housewife; afterwards, her role expanded to that of being a nurse, as well as the mother of adopted son