Historical clue formulations

• Military chopper — 2026-03-13
• Brother of Disney's Louie and Dewey Duck — 2025-08-03
• Singer Lewis with a cameo in "Back to the Future" — 2024-12-24
• Cartoon brother of Dewey and Louie — 2023-01-23
• Nephew of Donald Duck — 2021-07-12
• ___ Lewis and the News — 2020-02-03
• Chopper in the Vietnam War — 2017-07-04
• Vietnam War copter — 2016-07-10
• ___ Lewis and the News — 2011-08-29
• Nephew of Donald Duck — 2011-07-04
• U.S. military chopper — 2009-01-23
• First of a Disney trio — 2008-12-04
• Army helicopter — 2001-06-02
• Louisiana's Long — 2000-11-21
• Military helicopter, informally — 2000-11-10
• A nephew of Donald's — 1998-12-13
• Politico Long — 1998-09-09
• Long in politics — 1998-05-24
• Radical Newton — 1995-12-07
• The Kingfish, to friends — 1995-01-15