Here's some stuff I found on youtube from Martin Austwick aka "Oz" on circular vs. straight punching in historical English pugilism or bare knuckle boxing from the pre-modern era. As a WC practitioner, I found his observations based on written statements from boxers of those times to be fascinating and relevant to WC.
The outward similarities between early bare-knuckle boxing or what Austwick terms historical pugilism and Wing Chun which developed around the same time have been noted before.
http://a.espncdn.com/photo/2008/0906/box_g_sullivan2_sw_400.jpg
http://www.ewingchun.com/sites/default/files/imagecache/full-size/profile-images/yip-man-08.jpg
Anyway, I thought the following video clips to be relevant and thought provoking:
The outward similarities between early bare-knuckle boxing or what Austwick terms historical pugilism and Wing Chun which developed around the same time have been noted before.
http://a.espncdn.com/photo/2008/0906/box_g_sullivan2_sw_400.jpg
http://www.ewingchun.com/sites/default/files/imagecache/full-size/profile-images/yip-man-08.jpg
Anyway, I thought the following video clips to be relevant and thought provoking: