The New York Times has an article about a historian’s rather thin-sounding argument that President Lincoln was gay. This sounds like wishful thinking on the part of the Times, but, for more, see here.
UPDATE: Actually, it is misleading to call the author of the book in question a “historian” – the Times, in fact, describes him as a “psychologist, influential gay writer and former sex researcher for Dr. Alfred C. Kinsey.” Make of that what you will.