Brother Dennis points me in the direction of the “world’s largest natural sound archive” from Cornell University. Mostly birds, but lots more.
http://cornelluniversity.tumblr.com/post/40770771576/worlds-largest-natural-sound-archive-now-fully
Day: August 8, 2016
President Ford Pardons Nixon
September 8, 1974
… With little discernible effect on Long Beach, California …
… or my Land Rover.
Who knew then that politics would reach their present depths?
[The above are photographs taken on September 8, 1974. This begins a project to seek out images unwittingly made on days of particular historical interest.]