I'm wondering about the paper that was used for BSP flyers, announcements and prospectus (prospecti?) to announce various Buk books. Is the paper of similar quality to that used in the books? I'd like to lay some of these into first editions and I'm concerned about yellowing. These "announcements" vary in paper type from the high-quality prospectus to the large postcard-sized item to BSP catalogues to the paper-thin announcement such as those used for Bring Me Your Love. I don't have enough of these to know if there are more variations.
Any thoughts?
Any thoughts?