ATLANTA — Almost four decades after the Wicked Witch of the West plagued Dorothy in The Wizard of Oz, the green-skinned, bushy-browed one lost her broom on, of all places, Sesame Street. Actress Margaret Hamilton reprised her famous role in an episode of the children’s TV series that aired on Feb. 10, 1976, writes Heather Greene in her new book Bell, Book and Camera: a Critical History of Witches in American Film and Television (McFarland, April 2018, 234 p). “With the exception of Big Bird and Oscar the Grouch, the inhabitants of Sesame Street are visibly frightened of Hamilton’s character,” Greene writes. The Wicked Witch also scared the hades out of young viewers, just as she had done for decades since the release of Oz in 1939.