Maira Kalman is perhaps best known by adults for the now iconic "New Yorkistan" and other covers for The New Yorker , or a dozen books including A nd the Pursuit of Happiness and The Principles of Uncertainty . Kids, on the other hand, know her better for the 18 picture books she's written and illustrated. Kalman's picture books for children are the inspiration for an exhibition opening this week at the High Museum of Art. It's called The Pursuit of Everything . One of her books, Max Makes a