The USDA Pomological Watercolor Collection documents fruit and nut varieties developed by growers (or introduced by USDA plant explorers) around the turn of the 20th century. These technically-accurate paintings were used to illustrate USDA bulletins, yearbooks, and other publications distributed to growers and gardeners across America.
The collection features 7,584 watercolor paintings, lithographs and drawings - including 3,807 images of apples.Credit: National Agricultural Library