Caravan merchants is a paper note in Fallout 3.
Location
It can be obtained from Uncle Roe in Canterbury Commons when starting the unmarked quest Merchant Empire.
Transcript
Caravan Merchants
* Crow -- Well-Suited Servant of the Spirits
"Armor and apparel to protect against the dangers of this world and beyond."
* Lucky Harith -- Master of the Manifold Paths of Survival
"Weaponry of all flavors for combatants of any age!"
* Doc Hoff -- Doctor of Excessively Applied Biochemistry
"Meds, chems, and food at reasonable prices for the discriminating customer."
* Crazy Wolfgang -- Junkmaster Extraordinaire
"The right junk for the right job, every time."
