Heroes Of Today : Kessinger Publishing : 9781163980316 : 1163980315 : 10 Sep 2010 : ""Heroes of Today"" is a non-fiction book written by Mary R. Parkman and published in 1917. The book is a collection of biographies of several notable individuals who were considered heroes in their time. The book features seven individuals, including John Muir, John Burroughs, Wilfred Grenfell, Robert F. Scott, Samuel Pierpont Langley, and Edward Trudeau. The book begins with John Muir, an American naturalist and conservationist who is best known for his efforts in preserving the wilderness of the United States. The biography covers Muir's life, his work in preserving natural areas, and his writings on nature.The second biography is about John Burroughs, an American naturalist and writer who was known for his nature essays. The biography covers Burroughs' life, his work in the field of natural history, and his writings on nature.The third biography is about Wilfred Grenfell, a British physician and mis