One thing many are unaware of is that Bruce published a companion wall chart / poster. Whereas the "Chinese Gung Fu" book sold for $5.00, the "instruction chart" sold for only $1.00. I have no idea how many were sold but I have only seen three others in more than 40 years of collecting.
The poster is unhung with no holes in the corners or evidence of tape - some feathering along the edges but essentially very good condition with slight yellowing of the paper due to its age. It is a two-sided black/white poster folded in fourths. The full size is approximately 22 1/2" tall by 17 1/2" wide. My guess is that many less copies of the poster were sold than the book. Of the ones that were sold, it's likely many were poked with thumbtacks or hung up on walls with tape and then at some point torn down and thrown away.
If you are interested in purchasing a faithful reproduction of the original poster you can do so at the official Bruce Lee website www.brucelee.com. My original was the source document used to reproduce the poster. Here is the purchase link: https://shop.brucelee.com/product/XLAP033/chinese-gung-fu-poster?cp=51324_105315_52620
The question of how long the wall chart / poster was actually available for sale is unknown. However, recent evidence provided by super collector Jeff Chinn indicates it may have been sold as late as 1972. This evidence comes in the form of a "flyer" advertising the items James was selling at the time.
The "About the Author" section states "J. Yimm Lee spent 10 years as a student of Bruce Lee, learning Wing Chun and Jeet Kune Do". Since James and Bruce met in the early 60's this would place the flyer in the early 70's timeframe. In addition, the flyer references James Lee's book on Wing Chun which was published in 1972. Lastly, in the center right there is a reference to Modern Martial Art Apparatuses being "ready for 1973".
Photo credit: Jeff Chinn