and Identification Strips
2-1/4 x 10 in. strips of .011 acid free paper are
ideal for use in rare book collections. Notes on a strip might mark a book
for future treatment, or researchers may use these harmless strips to mark
pages. Small notches may be used to prevent the strips from sliding into the
volume, though even if a strip is left in place over an extended
period, it will not cause harm to the book.