- One may be found at the Pumpkin House, on a nightstand on the second floor.
- Sold by vendors. (Occasionally sold by Doc Stanley at the Whitespring Resort.)
- Found as random loot.
- Fallout 4 loading screens: "Popular with beatniks and intellectuals before the Great War, Daddy-O raises Intelligence and Perception, but lowers Charisma, for a limited period of time."