Dr. Bucke and Walt Whitman's homosexuality.
D004739:England; D005197:Famous Persons; D005260:Female; D049672:History, 19th Century; D006716:Homosexuality; D006801:Humans; D008093:Literature, Modern / Q000266:history*; D011037:Poetry as Topic / Q000266:history*; D011570:Psychiatry / Q000266:history; D014481:United States