This looks like a lovely book, full of travel sketches and notes on flora and fauna found in uncharted places: Explorers’ Sketchbooks.
“This remarkable book showcases 70 such sketchbooks, kept by intrepid men and women as they journeyed perilous and unknown environments—frozen wastelands, high mountains, barren deserts, and dense rainforests—with their senses wide open.”
Available at Amazon.