CHARLOTTE'S WEB (184 pp.) E. B. WhiteHarper ($2.50).
THE HAPPY PLACE (58 pp.)Ludwig BemelmansLittle, Brown ($2.50).
MARY POPPINS IN THE PARK (235 pp.)P. L. TraversHarcourt, Brace ($2.50).
BIG TIGER AND CHRISTIAN (593 pp.)Frifz MühlenwegPantheon ($4.95).
This year's crop of children's books has been remarkable on two counts: 1) it is probably the largest in publishing history (more than 1,000 titles), and 2) as a whole it comes close to proving that junior is just as well off curled up with a good TV set. There have been shovelfuls of forgettable stories about small, cuddly animals,...