Holley Treatise on Ordinance and armor

[alwion]

https://civilwarnavy.com/wp-content/uploads/2020/06/Holley_A-Treatise-on-Ordnance-and-Armor.pdf  online downloadable book on civil war era cannons, etc. 1865   most of it was too technical for me, but had lots of pictures

[CarlS]

Very interesting.  Of course I haven't read it this quickly but it does look interesting.  It would be a good book to have in the library.