3 is from Sartana Is Coming, Trade Your Pistols For A Coffin aka Fistful of Lead
4 is from Fighting Fists of Shanghai Joe
6 is from I Am Sartana, Your Angel Of Death
7 is from The Mercenary
9 is from Ace High
15 is from Face To Face
Mendoza is bugging me. I'm can't place it but it seems awful familiar.