Corpse Retrieved is a paper note in Fallout: New Vegas.
It is added to the player's inventory after defeating the Fiends who have laid an ambush around Esteban Morales at REPCONN headquarters during the quest A Final Plan for Esteban.
I managed to get Ranger Morales' corpse away from the Fiends. I should return to Pvt. Morales and let her know her husband's body is safe.