We've discovered aliens have been studying us humans as much as we have been studying them.
These are just some of the pages of their odd encyclopedia, some scraps of what is surely a much larger source.
I made this "top secret" folder only using images from
Library of Congress' Farm Security Administration collection.
I specifically picked images that showed humans doing things I couldn't quite understand, to add to the mystery, let's say.
As for the texts, they're random Encyclopedia Britannica articles, somewhat related to the photos I've chosen.
The alphabet is made by me and completely translatable (though you could just download the PDF and, y'know, copy-paste the text. Boooh! Boring!).
Below is a flippable version of the project, though you may want to
download the PDF here for reading accessibility.