What it's about: In the summer of 1938, pioneering botanists Elzada Clover and Lois Jotter conducted a survey of the Colorado River during a treacherous 43-day, 600-mile rowboat journey.
Read it for: an evocative and richly detailed tribute to Clover and Jotter, who braved both the elements and the rampant misogyny of the scientific community to become the first to catalog flora in the Grand Canyon.
Featuring: the pair's journals and letters from the trip.