Historical clue formulations

• Perspective, for short — 2026-07-31
• Outlook, in brief — 2023-06-13
• Perspective, in brief — 2021-02-21
• Personal take, for short — 2019-03-15
• Long-running PBS film series — 2017-10-16
• PBS documentary series since 1988 — 2016-08-24
• Long-running PBS film showcase — 2012-09-18
• Long-running PBS documentary film series — 2012-07-15
• Motion picture angle: Abbr. — 2004-08-04