Historical clue formulations

• Bring into play — 2025-05-22
• Avail oneself of — 2015-04-29
• Put to work — 2014-05-09
• Put into play — 2012-10-11
• Put into service — 2012-09-12
• Put to good effect — 2011-10-24
• Put to work — 1998-12-23
• Put into play — 1998-11-07