Daughter of Salomon (Sal) Ketellapper and Lena Ketellapper.
Juultje was a classmate of Anne's at the Sixth Montessorischool. She was murdered in extermination camp Sobibor on 9 July 1943.
Autograph book or poëziealbum of Juultje Ketellapper, with a verse from Anne from the summer of 1939. On the left page, Anne pasted a picture of herself, taken in May 1939.