Historical clue formulations

• "This Old House" network — 2026-07-07
• Network supported by "Viewers Like You" — 2026-06-14
• "Nova" network — 2026-04-16
• Channel supported by pledge drives — 2025-10-19
• "Downton Abbey" network — 2025-02-16
• "Nova" airer — 2025-01-15
• Its first airing was "The French Chef" with Julia Child — 2024-12-21
• Channel with on-air fund-raising — 2024-04-21
• "Clifford the Big Red Dog" airer — 2024-02-18
• "Washington Week" airer — 2024-02-08
• "NewsHour" airer — 2023-10-08
• Network behind the Ken Burns docuseries "Jazz" — 2023-05-20
• "This Old House" network — 2023-05-09
• "Frontline" network — 2023-03-06
• Network supported by "Viewers Like You" — 2023-03-05
• Viewer-supported TV network — 2023-02-27
• "Reading Rainbow" airer — 2022-11-25
• "Antiques Roadshow" airer — 2022-08-13
• "Nova" network — 2022-06-07
• "Cyberchase" channel — 2022-05-08
• "Call the Midwife" network — 2022-02-20
• Network supported by "Viewers Like You" — 2022-02-07
• U.S. airer of "Downton Abbey" — 2021-10-04
• Network supported by "Viewers Like You" — 2021-09-23
• Airer of Ken Burns documentaries — 2021-09-16
• "The Magic School Bus" was its first fully animated series — 2021-08-15
• "Nova" airer — 2021-03-02
• "___ NewsHour" — 2021-02-23
• "Arthur" airer — 2021-01-16
• Nightly "NewsHour" presenter — 2019-12-09
• "Nova" airer — 2019-09-16
• "___ NewsHour" — 2019-02-14
• "Mister Rogers' Neighborhood" airer — 2019-02-12
• "Masterpiece" network — 2018-10-25
• "Mystery!" network — 2018-03-29
• Broadcaster of many Ken Burns documentaries — 2017-11-26
• Airer of Ken Burns documentaries — 2017-11-15
• "NewsHour" airer — 2017-02-10
• "Masterpiece Theatre" network — 2017-02-07
• "Mister Rogers' Neighborhood" airer — 2016-06-27
• Nonprofit network — 2015-12-06
• "Downton Abbey" airer — 2013-12-18
• Airer of Masterpiece Classics — 2013-12-09
• Home of "NerdTV" — 2013-08-16
• It has lots of pledges — 2013-04-25
• "Sesame Street" channel — 2012-08-15
• "Masterpiece Theatre" network — 2012-03-13
• "Independent Lens" network — 2011-11-20
• "Reading Rainbow" network — 2011-11-13
• "Sid the Science Kid" network — 2011-10-29