if you're at all interested in vintage photography, particularly the sort that heirs on the odd and imperfect side, your treasure hunt should end at Square America. this site is full of wonderously quirky photos from the 1890s to the 1970s, all taken by amateur photographers, and arranged in fascinating groupings for your perusal. i could spend hours on this site just staring into all those faces from the ether. here are some of my favourites:
these folks have also published a book of 350 photos from their collection called Who We Were. looks good, people.