“Camelot” opened on Broadway 63 years ago, an eagerly anticipated new musical from the makers of “My Fair Lady.” But happily-ever-aftering took a while.

Out-of-town, while trying to trim the overlong production, one writer was hospitalized with an ulcer, and the director collapsed of a heart attack. In New York, despite starring Julie Andrews and Richard Burton, “Camelot” took months to find its footing, and only did so following a televised segment on “The Ed Sullivan Show.”