INA.fr

INA.fr has an archive of videos that includes a number of classic period cancan performances, including these:


http://www.ina.fr/video/I04315111/marcel-amont-le-bresilien-video.html

http://www.ina.fr/video/R10335007/spectacles-et-festivites-a-l-occasion-de-la-sainte-barbe-video.html

http://www.ina.fr/video/AFE85007217/soiree-au-moulin-rouge-video.html

http://www.ina.fr/video/I00008263/french-cancan-au-moulin-rouge-video.html

http://www.ina.fr/video/CAF91022241/vendanges-a-montmartre-video.html

http://www.ina.fr/video/CAF94062700/vendanges-sur-la-butte-montmartre-video.html

http://www.ina.fr/video/CAF94062703/vendanges-a-montmartre-video.html

You can find other cancan videos using the search function on these pages.