Historical clue formulations

• Area for note-taking — 2023-05-28
• Wiggle room — 2021-08-26
• Site for a doodle — 2019-04-19
• Noted part of a book? — 2014-03-13
• Place to doodle — 2013-06-19
• With 29-/30-Across, wiggle room ... or a hint to this puzzle's theme — 2012-02-16
• Place for doodles — 2001-12-18
• Broker's security — 1996-12-05