Historical clue formulations

• Latched, in a way — 2009-12-09
• Like some locked gates — 2006-06-20
• Closed with a lock — 2004-09-10
• Secured, as a gate — 2001-09-14
• Fastened, in a way — 1999-09-12
• Fastened, in a way — 1998-04-19