The blue & grey crock on a lower shelf is what the first margarine was made in.
There was a bead in it so when you kneaded it with your hands you broke the bead which had yellow food coloring in it.
I don't know what state that's in, but places that haven't been disturbed for a long time is exactly where Brown Recluses like to hide. I'd spray a shed like that before going into it.
That typewriter looks like an old Underwood brand. I bought one of those about 5 years ago, at a local auction for $25. I spent a couple hours giving it a good cleaning, and installed a new ribbon, and everything worked. I wound up selling it on EBAY for $400.