The U.S. Department of Agriculture's Pomological Watercolor Collection is an archive of some 7,500 botanical watercolors created for the USDA between the years 1886 and 1942 by around five dozen artists. Housed by the United States National Agricultural Library, it is a unique resource documenting existing fruit and nut cultivars, new introductions, and specimens discovered by USDA's plant explorers, representing 38 plant families in all. It has been called "one of the world's most unusual holdings of late 19th and early 20th century American botanical illustrations".

Amanda Almira Newton was a botanical illustrator for the U.S. Department of Agriculture (USDA) who specialized in watercolors of fruit. Her work is now preserved in the USDA's Pomological Watercolor Collection, and she is the second-most prolific contributor to that archive of 7600 paintings, with her work representing roughly one-sixth of the total.