Viven Thomas (1910–1985) combined imagination, skilled dexterity, and hard-won medical knowledge to develop tools and techniques for successful open heart surgery on babies. His life and work are vivid in the pages of this picture book biography, in which Hooks details how his youthful work in fine carpentry, paired with his desire to become a doctor, propelled Thomas in his pursuit of his goals. In addition to the challenges facing any medical researcher, Thomas also endured such obstacles as the economic devastation of the Great Depression, unequal treatment as a black research assistant, the challenge of finding housing in the Jim Crow South, and the failure to be recognized for his monumental contributions to the field of neonatal heart surgery. It is the work Thomas achieved, however, in spite of these enormous challenges, that will pique reader interest as they learn about his design of tiny operating tools and his role guiding surgeons through neonatal operations. Bootman’s lifelike watercolor illustrations beautifully and vividly evoke the carpentry shop, research labs, and auditorium where, years later, Thomas was finally honored for his work and appointed to the faculty at Johns Hopkins. Beyond the crucial message of perseverance and spotlight on prejudiced attitudes that still resonate today, this middle-grade picture book illuminates the life of little-known man whose innovations continue to be essential to modern medicine.