This Stranger mission in Red Dead Redemption becomes available after completing the Abraham Reyes mission «The Gates of El Presidio». Reach the question mark marker on the map to start this mission.
The person who gives you the mission will hand you several photographs. Bring the photographs to the marker on the map, in the building next to it. Note that the mission will be available for completion from 7 AM to 6 PM. Show the photographs to Aldous Worthington, and then return them to the person who gave you the quest.
After finishing the dialogue, the mission will be considered completed. Rewards: