Whitman, Walt, 1819-1892. Walt Whitman's Leaves of grass / edited with an introd. by Malcolm Cowley. - 1st (1855) ed. - New York : Penguin Books, 1976, c1959. - xxxvii, 145 p. : port. ; 20 cm. - The Penguin poets . ISBN: 0140421998 : LCCN: 76371718 LC Class. No.: PS3201 / 1976b Dewey Class. No.: 811/.3