Bertagna, Julie. Wildheart: The Daring Adventures of John Muir. William Goldsmith, Illus. Graphic novel. Yosemite Conservancy, 03/2019. 128pp. $17.99. 978-1-930238-94-7. HIGH ADDITIONAL. GRADES 3-6. This graphic novel biography by Julie Bertagna introduces middle grade readers [continue reading]