Gents,
The other thing that delayed Madaus' CS flags trilogy was that he also wanted to do that massive book on Confederate firearms with John Murphy before the latter gentleman, who was ill, passed away. He died not long after the massive book came out. Folks forget that even more that CS flags, Madaus was a firearms expert and former curator of the Buffalo Bill Cody Firearms Museum.
That and stuff just kept showing up from everybody who sent flags things to him.
Greg Biggs