60 Years of Urban Change (2015)
iqc.ou.edu
iqc.ou.edu
https://www.strongtowns.org/journal/2015/1/7/americas-suburb...
Looks like some places like Nashville and Atlanta actually had density, but it was wiped out in favor of highways.
One of my biggest dreams is to move back down south (because fuck winters here), but I've gotten so accustomed to having good public transit and the possibility of living (and not struggling) without a car.
Before: http://thewestendmuseum.org/wordpress/wp-content/gallery/urb...
After: http://thewestendmuseum.org/wordpress/wp-content/gallery/urb...
Read more: http://thewestendmuseum.org/history-of-the-west-end/urban-re...
I recommend visiting The West End Museum if you are in Boston.
https://en.wikipedia.org/wiki/New_Town,_Edinburgh#/media/Fil...
https://earthexplorer.usgs.gov/
It has a huge number of high-resolution aerial photos for large swaths of the country going back to the 1930s, and not just urban areas. The interface is really clunky but once you get the hang of it you can find an enormous amount of data.
I couldn't find mention of it but I'm sure the OP site obtained their photos from there.
Edit: I decided to look at the rest of the photos after writing this comment and it is obvious in some of the other photos that the author somehow thinks it is useful to have photos of before and after that don't even overlap at all. Oakland, for example, has maybe 10% overlap with one showing mostly west Oakland and the other showing the Lake Merritt area. Maybe my browser is just not displaying things right. I'll interpret these strange before and after images that way and move on.
Yah, there should be a slider... Initial view shows left half of the area from before, right half from after, and you drag the slider to change the ratio. You might want to reconsider your browser choice if it also failed to display the "how to use" instructions at the top right.