We know you can read Pepys diaries a page a day online. (Previous Mefi post here.) But there are more. Kafka's Diaries. W.N.P Barbellion's diaries (The Journal of a Disappointed Man, highly recommended.) The Diary of a Nobody (the page a day seems to be down, but the whole Punch series is here.) The Notebooks of Da Vinci. Henry David Thoreau, day by day. Fibroid Sludge, the cartoon diary of Irven Spence. A previous MeFi post on Martha Ballard's historical diary. And of course, that diary of one day, Ulysses, a page a day.