These "giant" specials were a real treat some years ago when DC felt like doing that sort of thing. They published several neat packages of entertaining comics, none more so than this one featuring the artistic elegance of Jerry Ordway. The inset of The Spectre in the logo appears to be a Jim Aparo image from Adventure Comics #431..
Here's a look at Ordway's artwork minus the copious cover copy. I love it, but there's something about the overwhelming copy on the ultimate cover which gives it a frantic energy. Ordway definitely knows his stuff.