Margaret Wise Brown, the author of <I>Goodnight Moon</I> and dozens of other children's classics, all but invented the picture book as we know it today. Combining poetic instinct with a profound empathy for small children, she knew of a child's need for security, love, and a sense of being at home in the worldand she brought that unique tenderness to the page. <P>Yet these were comforts that eluded her. Brown's youthful presence and professional successas an editor, bestselling author, and self-styled impresariomasked an insecurity that left her restless and vulnerable. In this moving biography, Marcus portrays Brown's complex character and her tragic, seesaw life. Her literary achievement and groundbreaking discoveries about small children's emotional needs were offset by tormented romances including a passionate relationship with Michael Strange, the celebrity socialite once married to John Barrymore. </P>