Historical clue formulations

• Easy ___ — 2019-01-27
• Easy ___ — 2013-09-03
• See 112-Down — 2006-09-24
• Easy ___ — 2006-01-13
• How easy things might be — 2005-12-02
• Easy ___ — 2005-11-09
• Easy ___ — 1999-03-18