Historical clue formulations

• "Just a little longer!" — 2024-03-31
• "Stick with it!" … or a hint to the answers to the starred clues — 2022-09-26
• "Don't give up now!" — 2015-08-31
• "Keep up the fight" — 2015-07-19
• "Keep going!" — 2009-03-09
• "Keep going!" — 2003-03-10
• Order to an art gallery worker? — 1997-10-12