evening, the history of street photography is currently being rewritten, at least so far as the streets of chicago are concerned. anthony mason shows us the eye-opening snapshots of a previously unknown photographer. >> reporter: vivian myer, by all accounts was a very private person. a nanny and housekeeper but her passion was taking pictures with a rolliflex dangling from her neck, she took thousands of them, street scenes, intimate moments, anonymous portraits, pictures she, apparently, never shared with anyone. >> here's an interesting one. >> reporter: until john maloof accidentally stumbled on them. so all this stuff is up in your attic. >> yeah, most of her personal belongings are up there. >> reporter: a few years ago maloof, a real estate agent and flee market fan saw a box of negatives at a chicago auction house. >> her storage locker had delinquent payments so what they do is auction the stuff off.