To read this trick book, you can start with the wide country, where a lineup of goofy grinning cows, a river with a large bird in the foreground, and a mosaic-patterned ""many-colored snake"" stretch out along 22"" x 6"" double-page spreads. . . and then go on, via the country and then the city airports, to the tail city in the remaining pages, where a 90Â° turn of the book shows high buildings, cutaway elevators, and a parade with an Uncle Sam on stilts. Or you can start with the tall city and go the other way. Either way, you'll see two children, a boy and a girl, carrying their suitcases through all the pictures, heads bobbing from the river in a country scene or peering from bus windows en route or tall building windows in the city. Chwast's bright, wobbly cartoons are still droll in their goofy Sixties style, but the plan is more a novelty than an original concept and may require a Sixties-style budget to justify.