Historical clue formulations

• Preserver of freshness — 2026-08-16
• Animal whose crabeater variety does not, in fact, eat crabs — 2026-06-03
• Ocean prey for a 27-Down — 2026-05-20
• Close up tight — 2026-02-01
• Make airtight — 2025-11-18
• Circus clapper — 2025-10-14
• Playful marine mammal — 2025-08-13
• Stamp for a notary public — 2025-06-23
• Sign of authenticity — 2024-11-03
• Waxy imprint — 2024-10-15
• Make airtight — 2024-10-06
• Close tightly — 2024-10-02
• Protection against tampering — 2024-06-20
• Prepare to cook sous vide, perhaps — 2024-05-18
• Member of an elite force — 2023-12-23
• Product safety indicator — 2023-11-12
• "E pluribus unum" appears on one — 2023-11-05
• Aquatic barker — 2023-10-22
• "Kiss From a Rose" singer — 2023-10-17
• What to do to a deal or an envelope — 2023-10-02
• Close up tight — 2023-05-10
• Close tightly — 2023-02-19
• Notary public's authorizing stamp — 2023-01-24
• Circus barker? — 2023-01-04
• ___ of approval — 2021-11-29
• Circus animal balancing a ball on its nose — 2021-10-25
• Close tightly — 2021-08-10
• Follower of Navy or presidential — 2021-08-03
• Grown-up pup — 2021-08-01
• Indicator of approval — 2021-07-29
• Animal that "claps" — 2021-07-27
• One clapping at a circus? — 2020-12-28
• Close up — 2020-12-18
• Member of an elite team — 2020-08-25
• Word after Christmas or fur — 2020-04-18
• Conclude, as a deal — 2020-03-19
• Sight on a dollar bill — 2020-01-02
• Notary public's need — 2019-12-12
• Circus animal with flippers — 2019-12-09
• Member of an elite team — 2019-10-09
• Animal having a ball at the circus? — 2019-04-02
• Circus sight — 2018-07-25
• Certain Navy specialist — 2018-05-29
• It makes an impression — 2018-01-19
• Elite team member — 2018-01-10
• Clothes — 2017-10-12
• Pup grown up — 2017-10-08
• Navy commando — 2017-09-24
• Member of an elite Navy team — 2017-09-04
• Circus performer with a ball — 2016-04-19