Historical clue formulations

• Divination aids … or a phonetic hint to the shaded squares in this puzzle — 2024-05-02
• Alternative to tarot cards — 2020-11-15
• Reading material for the future? — 2015-06-11
• Means of divination — 2013-03-07
• What some predictions are based on — 2009-09-05
• Some seers read them — 2008-09-23
• Prediction basis #4 — 2002-05-22
• Something to read, or blue-green overhangs — 2001-10-17