Possible Clues:

• Thin paper
• No ink is on spoilt paper
• Very thin variety of paper
• Paper named for a vegetable
• Sort of paper
• Upon either side of one, one's southern relations are enough to make one weep
• The sheet is so thin it's enough to make you weep
• 9's relations reduce the weight of letters
• Thin paper, a cut through which may make one cry
• That's paper-thin enough to make one weep