Note from Pronto is a paper note in Fallout 3.
Location
It can be obtained from Pronto in Paradise Falls when starting the unmarked quest Economics of Violence.
Transcript
Okay, look. Here's how it is: I need some better stuff to trade or else I'm never going to get anything worthwhile in this place. Bring me some Chinese assault rifles. Say... about 20? I should be able to get some better stuff in to sell you after that.
