Shorpys, ones again, produced an image worth posting. Pretty sure it's lack of my personal education, but I was under impression that there were only 8-10 different Cannons available. My perception was primarily based on various movies and photographs. Whatever I did read was not concentrated around the artillery related topics. I only knew about different cannon balls, and muskets to be honest. But rifled bores...

Wikipedia says, that here were two general types of artillery weapons used...

How many different cannons did they have during the US Civil War?