Historical clue formulations

• ___ Alto, Calif. — 2025-04-08
• El ___ Alto, California redwood that's more than 1,000 years old — 2023-11-02
• ___ Alto — 2023-06-28
• ___ Alto — 2023-05-04
• ___ Alto — 2023-02-19
• Stick: Sp. — 2020-11-14
• ___ verde (desert tree) — 2019-12-25
• ___ Alto, Calif. — 2019-04-09
• ___ Alto, Calif. — 2018-07-16
• ___ Alto, Calif. — 2018-06-04
• ___ Alto — 2017-03-17
• ___ Alto, Calif. — 2017-01-03
• ___ Alto, Calif. — 2015-07-20
• Texas' ___ Duro Canyon — 2014-01-18
• ___ Alto — 2013-05-12
• Alto preceder — 2011-04-29
• ___ Pinto (Texas county or its seat) — 2011-03-11
• Arizona's ___ Verde Nuclear Generating Station — 2011-02-13
• ___ Alto — 2007-02-15
• ___ Alto — 2006-04-26
• ___ Alto — 2005-06-05
• ___ Alto — 2003-08-14
• With 4-Across, part of Silicon Valley — 2003-05-11
• ___ Alto — 2003-03-23
• ___ Alto — 2001-05-08
• ___ Alto — 2000-03-07
• ___ Alto, Calif. — 1999-11-01
• ___ Alto, Calif. — 1999-06-29
• Stick, in Seville — 1999-04-23
• ___ Duro Canyon, Tex. — 1998-11-18
• ___ Alto, Calif. — 1998-11-16
• ___ Alto, Calif. — 1998-08-18
• ___ Alto — 1998-01-29
• ___ Alto — 1997-12-31
• ___ Pinto (Texas county) — 1997-06-14
• ___ Alto, Calif. — 1996-11-06
• ___ Alto — 1996-09-06
• Stick: Sp. — 1995-06-11
• _____ Alto — 1995-02-17