New York: Atheneum / Aladdin, (1975). SIGNED - A book for older children and young adults which speculates on why Leonard da Vinci chose to paint a portrait of the second wife of an unimportant Florentine merchant, when the rich and famous were clamoring for portraits by him - a portrait now known as Mona Lisa. INSCRIBED by the author on the half title page "from the first Mrs, Konigsburg, Elaine" and dated in 1980. Frontispiece of Mona Lisa. 138 pp plus 7 pp of reproductions of other da Vinci works.