I love finding books about people who have been lost to history—who were once well-known and part of every person’s education, but for whatever reason have faded from society’s collective memory. This year, I’ve already encountered two remarkable books about figures whose names you likely don’t recognize, but who shaped exploration and science for decades—centuries!—to come. It’s even better than usual, because these are heroes of the outdoors, a subject which is already near and dear to my heart.