Historical clue formulations

• Classic 1966 album with the tracks "Wouldn't It Be Nice" and "Sloop John B" — 2023-08-04
• Beach Boys album with the hit "Wouldn't It Be Nice" ... or things hidden in 17-, 31-, 37- and 49-Across — 2019-04-23
• 1966 album ranked #2 on Rolling Stone's "500 Greatest Albums of All Time" — 2017-08-05
• 1966 album that's #2 on Rolling Stone's all-time greatest albums list — 2007-12-08