I found version 7.5.2 on cdn1.evernote.com : dmg, zip.
However, I think it would require me to completely delete all my notes that have been downloaded locally. I had tried to downgrade and the (older) Evernote app said that my data was being managed with a later version). Since I wasn't quite ready to do that (and I wasn't sure that I would get all of the folders/directories and files), I upgraded to 7.6 again.
Given the work-around above, i.e. opening a note in a new editor window (i.e. double-clicking on a note or right click --> Open Note in New Window), version 7.6 is fine for now. If only it would work the same in the main editor window ...