Under, Leslie. The Art of Beatrix Potter.

1955. Rev. ed. Middlesex, England: Frederick Warne, 1972. Contains reproductions of many of Potter's drawings, including her book illustrations, sketches from her notebooks, and the mushroom drawings she intended someday to make into a book.

Potter, Beatrix. Beatrix Potter's Americans: Selected Letters, edited by Jane Crowell Morse. Boston: Horn Book, 1982. The letters from Potter to her American fans, written during the latter part of her life, contain many reminiscences of her youth.

. The Journal of Beatrix Potter, edited by Leslie Linder. Middlesex, England: Frederick Warne, 1966. This is the engaging journal that Beatrix Potter began at age fourteen and kept until she was nearly thirty years old.

Taylor, Judy. Beatrix Potter: Artist, Storyteller and Countrywoman. Middlesex, England: Frederick Warne/ Penguin Books, 1986. Contains plenty of pictures and provides a good overview of Beatrix Potter research since Lane's biography.