Imagine learning to read at the age of 116 Discover the true story of Mary Walker, the nation's oldest student who did just that, in this picture book from a Caldecott Honor-winning illustrator and a rising star author. In 1848, Mary Walker was born into slavery. At age 15, she was freed, and by age 20, she was married and had her first child. By age 68, she had worked numerous jobs, including cooking, cleaning, babysitting,...