Home » Grow Your Library This Earth Day Grow Your Library This Earth Day April 19, 2021 Take the opportunity to grow your library this week with our 2021 Earth Day Sale! We’ve gathered together a collection of books that will inspire you for Earth Day (April 22) – and beyond! Do you already have these essential titles? Take a look and find your next book today. Browse the Earth Day Collection. Our collection includes: And more! Check out the rest of the Earth Day Collection here.