The Oldest Student: How Mary Walker Learned to ReadBy: Rita Lorraine Hubbard Illustrator: Oge Mora 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. One of Slates 25 Greatest Picture Books of the Past 25 Years 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.