Each page is 12.75 X 9.5 inches. The paper is 70 lb rough w/c paper made many years ago for Grumbacher. The original sheets were 19 X 25.5 inches. Each sheet is folded into a signature and there are five signatures for a total of forty pagesMy apologies for the way it is scanned. You can put your thoughts and suggestions in this comment section if that works better for you.