English translation of the "Long Straight Sword" chapter as found in 武備志 (Wu Bei Zhi) "Military Preparation Manual", written in 1621.
 
More info: https://www.chineselongsword.com/straightsword
 
This is a hardcopy book, printed by Lulu.com in the US. 
Please order from here: https://www.lulu.com/en/us/shop/jack-chen/ancient-art-of-chinese-long-straight-sword/paperback/product-1y8k977q.html
 
The book is USD$17, and postage is very cheap if you're in the US or western countries, because the book is printed there. Be sure to take a look at www.Lulu.com to see if they are giving out any special discount codes.