Historical clue formulations

• Field tools — 2010-04-18
• Sights in Sargent's "Reapers Resting in a Wheatfield" — 2003-10-02
• They cut quite a swath — 2001-12-23
• Cuts, in a way — 1997-11-22
• Hilts:swords::snaths:_____ — 1995-06-02