<P> Although sales of the novel began slowly, by 1974 over 90,000 copies had been sold . In 2001, Publishers Weekly estimated that it had sold 6,754,308 copies . Today Where the Red Fern Grows is required reading in many American schools . One critic said it will please adults as well as children . </P> <P> I remember crying so much through this book, and even today I tear up thinking of Old Dan and Little Ann . I also loaned this to my (then) children's librarian, because the library copy was always out . I even marked the pages, "Get out tissue here ." </P> <P> I love, love, love this book with all my heart and soul . My fourth grade teacher read it to me eons ago, and I've read it to two of my three boys . There's something about weeping together uncontrollably that builds a community of readers...</P> <P> There is a statue of Billy and his dogs at the Idaho Falls Public Library . </P>

What is the plot of where the red fern grows