As far as I know they are all 30's, I bought a few from a guy who did some work at a printers back in the 80's, and was given some by the owner who had them laying around in a stock room. They are all 40x30 Quad size, even the bottom one is a vertical Quad. They were generic posters, so the spaces are for the names and locations to be added by who ever bought them, hence these are blank as they were never used. Which is a shame as I would of liked the town name etc on them. Mind this sort of poster was pasted up, so I doubt any exist with writing on.