another for the chemists - Tenney Davis, Chemistry of Powder and Explosvies

From the castbullet forum is this link with a pdf copy of the excellent Chemistry of Powder and Explosives by Tenney Davis:
http://1drv.ms/1kRmH38

And this is a very interesting short biography and synopsis of other articles by Tenney, particularly around the history of black powder:
http://pyrotechnics.no-ip.org/files/essential%20tl%20davis%20sampler.pdf