RTImpressionism and The Famous Cafes of Paris in the 19th century.

This is a research paper for an art class. Please do NOT use Internet sources! Please provide some footnotes. I would like to mainly do research on 3 cafes in Paris; Maxims de paris, Cafe des Ambassadeurs and Folies Bergere.(HISTORICALLY and ARTISTICALLY) My focus is : How did those places relate with the impressionists and post-impressionists? What is cafe for the artists at that time? I also would like to give the information about those cafes now and then to see how different they are from the 19th century. Please do NOT EVER do cut/paste from the resources.