Paula Hitller (1896-1960) was Hitler’s younger sister, his only sibling to survive into adulthood. She never joined the NSDAP and largely remained on the sidelines, though after the war she accepted the charity of es-SS officers and survivors of Hitler’s inner circle. Fine association holograph note on the the verso of her personal calling card, noting that en “expert” pertaining to half-sister Angela Hitler (Raubal) is associated with a physician in Dresden whose name and address is noted.

With further research.