I don't buy many regular comics so I concentrate on reprint books, mostly Silver & Golden Age stuff. For a long time, though, I only had 2 volumes of The Flash Archives. Early this year, I got Volume 3 and finally ordered Volumes 4-6 this month. Those have now arrived with Volume 6 arriving today. These reprint the four issues of Showcase that Flash appeared in plus issues 105-150 of his own title. I think every story was drawn by Carmine Infantino, which is a decent run.