Outside the world of the Marvel and DCs, plus to a lesser extent Dark Horse, Image, etc. Indie stuff pre-90s can sometimes be hard to find good info on. Then you get the older Whitman Gold Key stuff all over the place, Disney stuff, some Archie and Harvey and other cartoon books went by uncredited. Kids or even adults didn't care who did the stuff, and I'm sure the companies back then didn't want to lose their talent so why advertise their names. I feel Image Comics was a big part of helping changing the game in that regards.

Just out of curiosity, would you be able to take a picture of some art that has the artists signature showing (St Denis?), and also any insides of the book that include the small print/copyright stuff.