By the editor of Letters from Mississippi, this is a carefully informative, straightforwardly partisan account of the author's impressions during a 1967 trip to Cuba--specifically, her impressions of social and cultural developments since her 1961 visit. She found an end to institutionalized racism but a residue in many Cubans' thinking. She saw a widespread spirit of voluntary sacrifice--and a general feeling that money meant less, now that rents, education, medicine, day-care and telephones are free. She spent a lot of time with young people, from Havana schools to an Isle of Pines work camp. She describes the ramifications of the Great Miniskirt Battle and the state of women's liberation. Political emphasis falls on the fight against bureaucracy and class privilege. Fidel, she says, is above all an educator, and the Cubans are absorbed in creating a ""new sense of self,"" while, it seems, retaining their traditional spontaneity and half-humorous sense of national character. An unassuming, pleasantly provocative closeup.