Historical clue formulations

• National park in Alberta — 2025-10-27
• Canada's first national park, founded in 1885 — 2025-09-07
• Resort town in Alberta's Rockies — 2024-09-22
• National park in the Canadian Rockies — 2023-03-26
• Canada's oldest national park — 2022-07-05
• Canada's oldest national park — 2021-10-12
• National park with Lake Louise — 2020-06-14
• Canada's oldest national park — 2020-02-04
• National park west of Calgary — 2019-12-13
• Second-oldest national park in North America — 2017-10-07
• Canada's ___ National Park — 2001-07-10
• Alberta national park — 1997-02-05
• National park in Alberta — 1995-10-04
• Rocky Mountains park — 1994-06-05