First saw this at Behind the Curtain - 16 Sparrows: 1940s NYC in COLOR! so neat! I've watched so much TCM and I Love Lucy that it's hard for me to think of the early twentieth century as anything other than black and white. More pics can be found at the Daily Mail.
I thought this one was rather interesting. The Daily Mail caption says it's a picture of three homeless men. Interestingly, they all are dressed in a coat and hat and two of them have ties. In general, most of the pics show people dressed nicely by today's standards.