essays told of fly fishing for trout, of hikes over Peekamoose Mountain and Mill Brook Ridge, and of rafting down the East Branch of the Delaware River. It is for these that he is still celebrated in the region today, and chiefly known, although he traveled extensively and wrote about other regions and countries, as well as commenting on natural-science controversies of the day such as the theory of natural selection. He entertained philosophical and literary questions, and wrote another book about Whitman in 1896, four years after the poet's death. Fishing From his youth, Burroughs was an avid fly fisherman and known among Catskill anglers. Although he never wrote any purely fishing books, he did contribute some notable fishing essays to angling literature. Most notable of these was Speckled Trout, which appeared in the Atlantic Monthly in October 1870 and was later published in In The Catskills. In Speckled Trout, Burroughs highlights his experiences as an angler and celebrates the trout, streams and lakes of the Catskills. Death and legacy Burroughs enjoyed good physical and mental health during his later years until only a few months before his death when he began to experience lapses in memory and show general signs of advanced age including declining heart function. In February 1921 Burroughs underwent an operation to remove an abscess from his chest. Following this operation, his health steadily declined. Burroughs died on March 29, 1921, while on a train near Kingsville, Ohio. Burroughs was buried in Roxbury, New York, on what would have been his 84th birthday, at the foot of a rock he had played on as a child and affectionately referred to as '’Boyhood Rock'’. A line that he had written years before is etched on the tablet that marks the spot: "I stand amid the eternal ways". Woodchuck Lodge was designated a National Historic Landmark in 1962. Riverby and Slabsides were similarly designated in 1968. All three are listed on the National Register of Historic Places. Since his death in 1921, John Burroughs has been commemorated by the John Burroughs Association. The association maintains the John Burroughs Sanctuary in West Park, New York, a 170-acre plot of land surrounding Slabsides, and awards a medal each year to "the author of a distinguished book of natural history". Thirteen U.S. schools have been named after Burroughs, including public elementary schools in Washington, DC, Tulsa, Oklahoma, and Minneapolis, Minnesota,